A square lawn with side 100 m long has a circular flower bed in the centre. If the area of the lawn,

MRITUNJAY   9 years AGO

area of squqre=100*100=10000m^2

area of flower bed=10000-8614=1386m^2

area of circle=1386
pi*r^2=1386
r=21m
option 9

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ABHINAV PUSHPAM   9 years AGO

Area of square = 10000m^2
So, area of circle will be 10000-8614 = 1386 m^2
pi r^2 = 1386
r= 21m
option 9)

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Naveen Kumar   9 years AGO

Area of the flower pot=10000-8614=1386
3.14*r^2=1386
r^2=441
r=21
Radius of the flower pot=21m

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Anuj Dwivedi   9 years AGO

a^2-?r^2=8614
a^2=10000
after solving this we get r=21

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PRAGATHI G   9 years AGO

total area of lawn=100*100=10000m^2
area of circular bed = total area - area of lawn excluding circular bed
area of bed= 10000-8614=1386
pi*r^2= 1386
hence r= radius of circular bed = 21

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Robert Yogenson   9 years AGO

square are=100x100=10000
and flowed area=8614
reaming area=10000-8614=1386
circle area=pieR^2=1386x7/22=441
r^2=441=21

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Nandkishor jaiswal   9 years AGO

area of square =100*100=10000m^2
area of lawn except circle =8614m^2
so area of circle= 10000-8614=1386m^2
from formula:
22/7*r*r=1386
r^2=441
r=21

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Deepanshu Chaturvedi   9 years AGO

area of square-area of remaining part=area of circle
10000-8614=1386=pi*r^2
r=21 m
option 9)

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Gaurab Kumar Jha   9 years AGO

Area of square = 100*100;
Area of circle = 10000-8614;
1386=22/7*r^2;
r^2=1386*7/22;
r^2=441;
r=21

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Gaurav Pratap Singh   9 years AGO

Given side of square=10
area of square=100*100
Area of lawn exluding flower bed=8614
area of flower bed=10000-8614=1386
we know that area of circle=22/7*r^2
1386=22/6*r^2
r=21

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pravallika   9 years AGO

area of circle =area of square - area of circular lawn
=10,000 - 8614
=1386 = pi* radius^2
then radius ^2=441 implies radius of flower bed = 21m.

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Aman   9 years AGO

100*100-3.14*r*r=8614
so 3.14*r*r=1386
r=21
option 9

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Arnab Maity   9 years AGO

Area of the square = 100 * 100 = 10000 Sqm
Area of the flower bed = 10000 - 8614 sqm = 1386
Therefore, Pi * r^2 = 1386
r = sqrt(1386*7/22) = sqrt(441) = 21m

Answer: option 9) 21 m

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Ruby kaushik   9 years AGO

let radius is r
calculate area of lawn(100*100)
and the area of flower bed is - pi*r^2
now given is, 10000- 8614 = pi*r^2

(1387 * 7)/22 = r^2
solving it,
r = 21

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PRABHAT KUMAR   9 years AGO

area of squqre=100*100=10000m^2

area of flower bed=10000-8614=1386m^2

area of circle=1386
pi*r^2=1386
r=21m
option 9

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CHANDAN KUMAR   9 years AGO

area of square = 100×100=1000m^2
area of circular flower bed = (10000-8614)m^2 =1386 m^2

also ,
area of circular flower bed =22/7 r*r

so,
22/7 r*r = 1386 m^2

r =21 m

correct option is 9) 21 m

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aman aditya   9 years AGO

Area of flowered area=10000-8614=1386m^2
so
1386=(22/7)*R*R
r=21m

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Pintu Kumar   9 years AGO

area of squre lawn=(100m)^2=10000m^2
given area of lawn excluding the flower bed=8614m^2
hence the rest of area=(10000-8614)m^2=1386 m^2
we know that area of the circle=pi *r^2
1386m^2=(22/7)*r^2
r=21m

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MD JAVED SALIM   9 years AGO

Area of whole square = 100 × 100 = 10000 sq. m
Area of square excluding flower bed = 8614 sq. m (Given)
Area of flower bed = 10000 - 8614
pi(r^2) = 1386 sq. m
r^2 = 441 sq. m
r = 21 m

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MUTHUKURI SUHAIL   9 years AGO

area of square-area or flower bed=8614
let area of flower bed=x m^2
then 100^2-x=8614
by solving x=1386
here x=area or circular flower bed=?*r^2=1386
by solving r=radius of the circular flower bed=21m

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Sharada   9 years AGO

total area of square including circle at center=100*100=10000m^2
area of circle=10000-8614=1386m^2
area of circle=(22/7)*r^2
(1386*7)/22=r^2
sqrt(441)=r
21=r

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Wakale Pravin   9 years AGO

Area of lawn = 10000,
Area excluding bed= 8614,
Area of bed=10000-8614=1386,

Ï€r*2=1386,

1386/3.14=441,

√441= 21.

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Diksha   9 years AGO

Area of square lawn - area of the lawn excluding circular bed = area of circular bed .
10000-8614=Ï€r^2
Thus r=21

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RUPNARAYAN RANA   9 years AGO

Area of the Square=100*100=10000m^2
Area of circular flower bed=10000-8614=1386m^2
Now, pie R^2=1386
R^2=441
so R=21.
Hence Radius=21

Option (9)

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sudiptaa   9 years AGO

area of square = 10000 m^2
area of circle = 10000-8614 = 1386
radius of circle = 21 m

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karthiga   9 years AGO

Area of Square =10,000(100^2)
Area of Circle = 10000 - 8614 = 1386
22/7 * r^2 = 1386
r = 21

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Tru Jan   9 years AGO

Area of square =100*100 = 10000 m
Area of Flower ( Circular ) bed =22/7 * r*r
Remaining Area = 8614

so Area of Circle = 10000-8614 = 1386
22/7 * r*r = 1386

r=21m

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vimal tiwari   9 years AGO

10000 - 8614 = 3.14 * r * r


r=21 m

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Kalpana Sharma   9 years AGO

area of square-area of circular flower bed=8614
100^2-pi*r^2=8614
10000-22/7*r^2=8614
r=21

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sunil   9 years AGO

total area of lawn - area of lawn excluding circle= area of circle

area of circle =?r square

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Satya Samhitha Papineni   9 years AGO

area of flower bed=10000-8164
so 22/7*r*r=1386
so r=21

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ASHWIN   9 years AGO

Area of square = 100^2=10000.
Area of circle = (10000 - 8614) = 1386.

Therefore, 1386=(22/7)*r^2
(i.e) r^2=7^2*3^2

Hence, r = 21m.

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Bairi Sowjanya Reddy   9 years AGO

let r be radius of circle then,
100^2 - 3.14 r^2 = 8614
r^2 = 441
i.e r=21

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Yadu Vir Singh   9 years AGO

area of square = 100×100
= 10000 m^2

area of circular flower bed = 10000 - 8614
= 1386 m^2

so radius of circular flower bed = 21 m

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K KRISHNA PRASAD NAIDU   9 years AGO

x2=10000
10000-8614=1386
22/7*r2=1386
r=21

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Sai Kiran B   9 years AGO

area of square: s^2= 100 * 100= 10,000
area of circular bed:10000-8614=1386
area of cirlce:
area=pi * r^2
1386=22/7 * r ^2
r^2=441
r=21m
so radius=21m

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rakesh sharma   9 years AGO

100*100-(22/7) r*r=8614
solve it
r=21
answer

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NAVEEN KUMAR   9 years AGO

Area of flower bed=10000-8614=1386m^2
Hence,radius=Ï€r^2=2486
===>r=21m

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UJJWAL KAMAR   9 years AGO

Area circle = area square -8614
= 10000-8614
= 1386
Ï€r^2 = 1386
r = √(1386÷π)
= 21

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Mohammad Mustafa   9 years AGO

area of circle = area of entire square lawn (=a^2) - area of lawn without circular bed (= 8614 (given) ) .
now we get , area of circle = 1386 m^2

since area of circle = pie.r^2
on solving,

hence, radius (r) = 21m

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pravin singh   9 years AGO

area of square - area of circle = 8614
100X100 - 3.14xr^2 =8614
r^2=441
r =21 m

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Himanshu Melkani   9 years AGO

100^2=10000
10000-8614=?.r^2
1386/?=r^2
r=21

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Yekollu Muneeswar   9 years AGO

area of square = 100*100=10000 m^2
area of square w/o circular flower bed= 8614 m^2
area of circular flower bed= 10000-8614= 1386 m^2
-> PI * r^2=1386
-> r^2=1386/PI
-> r^2=441.17
-> r= 21 m

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Annareddy Anusha   9 years AGO

area of square=100^2=1000
area remaining after excluding area of lawn=8614
area of lawn=10000-8614=1386
we know area of a circle is (22/7)*r^2 note:pi=22/7
so r^2=(1386*7)/22=>441
so r=21

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Divya Malik   9 years AGO

area of square lawn(100×100) - area of circular bed(22/7 × r ×r) = remaining area(8614)

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Rishu   9 years AGO

area of sq. lawn = 10000 m^2
area of lawn excluding circular flower bed = 8614 m^2
area of circular flower bed = (10000-8614) = 1386 m^2
radius of circular flower bed = sqrt root(1386/pi) = 21

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Arpit   9 years AGO

Total lawn area - area excluding the flower bed = area of flower bed

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Ravneet Kaur   9 years AGO

area of circular flower bed=area of square-given area
area of circle=10000-8614=1386
area of circle=Πr^2
1386*(7/22)=r^2
√441=r
r=21

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vikash kumar das   9 years AGO

area of square-area of lawn excluding flower lawn=area of circular lawn
now are of circula lawn
(22/7)*r^=10000-8614
r=21

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dhanababu   9 years AGO

area of circle a=10000-8614=1386,
r^2=1386/(3.14)
r=21m

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Ajit Singh   9 years AGO

Total area = 8614 + (area of circle)
100*100 = 8614 + (pi*r*r)
10000-8614 = (22/7)*r*r
on calculating.....

r=21

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A janani hariprasad   9 years AGO

actual area=10000 m2.
difference=1386
from area of circle,r=21m

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Shobhit sengar   9 years AGO

area of Lawn = 100x 100
=10000m^2
area of circular ring = 1000-8614
=1386
so radius = root(1386÷ 3.14)

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s.h.h.praveen   9 years AGO

area of square lawn -area of circular flower bed =8614m^2
(100)^2-pie.r^2=8614
r=21.0m

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Yadu Vir Singh   9 years AGO

area of square = 100×100
10000 m^2

area of circular flower bed = 10000 -8614
= 1386 m^2

so, radius of circular flower bed = 21 m

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RANJAN FADIA   9 years AGO

area of sq = 10000m sq
area of circular flower bed= 10000- 8614 =1386 m sq
pi* r^2 = 1386
=> r^2 = 63 * 7
= 9*7*7
=> r = 3*7 = 21 m ans.

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