Latest TCS Aptitude Question SOLUTION: 15.There are Two circles of radii 5d cm and 3 cm touch each other at A and also touch a line at B and C. The distance BC in cms is? a. 60 b. 62 c. 68 d. ïƒâ€

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(#M40019915) TCS Logical Reasoning question Keep an EYE

15.There are Two circles of radii 5d cm and 3 cm touch each other at A and also touch a line at B and C.
The distance BC in cms is?
a. 60
b. 62
c. 68
d. 64

Asked In TCS juhe rawat (10 years ago)

Unsolved Read Solution (16)

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Read Solution (16) :

Swati Gupta  (9 years ago)

sqrt((distance between centers)^2 - ( r1^2-R^2)^2)
sqrt( 8^2 -(5-3)^2)
sqrt(64- 4)
sqrt(60) answer .

Is this solution Helpfull? Yes (36) | No (6)  

ayushi garg  (10 years ago)

plz provide me the solution of this question

Is this solution Helpfull? Yes (29) | No (13)  

UTTARAN GHORAI  (10 years ago)

DRAW A CIRCLE OF REDIUS 5 CM.AND SMALL OF 3 CM.AFTER DRAWING THE PIC AS PER SPECIFICATION.U WILLO FIND THAT A RIGHT ANGLE TRAINGLE AT THE OUT SIDE OF PIC.WHOSE ONE SIDE IS LENGHTH OF (5+3) =8 CM.AND ANOTHER IS(5-3)=2 CM.SO THE LARGEST SIDE OF TRAINGLE WILL BE (SQUART ROOT OF(8^2+2^2)=squart root of 68.

Is this solution Helpfull? Yes (28) | No (39)  

Kapil Dev Chauhan  (10 years ago)

it will be sqrt(64)
circle 1 radius: 5
circle 2 radius: 3

when a line pass touching the both the circles, it can be assumed as
radius of 1st circle + radius of 2nd= 8 so sqrt(64)

Is this solution Helpfull? Yes (16) | No (46)  

vikas  (9 years ago)

ans is sq rt of 60

8^2 - 2^2 = sqrt(60) coz hypotenuse is 8cm

Is this solution Helpfull? Yes (13) | No (2)  

Soumyadeep Dutta  (10 years ago)

ans is sqrt(68).
to understand you have to draw the circles

Is this solution Helpfull? Yes (11) | No (31)  

Riya Bose  (9 years ago)

Sol: Option A
√(d^2−(r1−r2)^2)
d = distance between centers
√((5+3)^2 – (5-3)^2)= √60

Is this solution Helpfull? Yes (8) | No (1)  

Srishti  (9 years ago)

a
soln: using sq root[d^2- (r1-r2)^2]

Is this solution Helpfull? Yes (7) | No   

Vishnu  (8 years ago)

admin pleaseremove unnecessary solutions they are deviating

Is this solution Helpfull? Yes (7) | No   

Anupam Mukherjee  (8 years ago)

BC^2 = (5+3)^2 - (5-3)^2
so, BC = sqrt(60)

Is this solution Helpfull? Yes (2) | No   

sharad  (9 years ago)

a
5-3=2
8*8-2*2=60
60^(1/2)=a

Is this solution Helpfull? Yes (1) | No (1)  

prakhar  (9 years ago)

draw diagram such that two circle touches each other at point A and also two circle touches each other through tangents at B and C.Now apply pythagorus theorem.

sqrt(64-4)= sqrt 60.................100% correct

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mani  (8 years ago)

answer is sqroot 68 sq(8^2+2^2)

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Anjani Kumari  (9 years ago)

Let x be amount ,
then, (5*4*x)/100 +x= 1020, hence x=850

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bhargav krishna  (9 years ago)

ans is sqrt(60)

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uttam kumar  (7 years ago)

https://www.quora.com/What-is-the-distance-of-BC-in-cms-if-two-circles-of-radii-5-cm-and-3-cm-touch-each-other-at-A-and-also-touch-a-line-at-B-and-C

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