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Area and Volume
A swimming pool whos surface forms a rectangle measures 25 m long by 15 m wide The pool is 2 m deep at the shallow end and the depth increases at a constant rate to 4 m deep at the other end How many cubic meters of water will pool hold
a)1250 b)975 c)1000 d)1125
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- Ans: d) 1125
Pool Dimensions:
Length 25 metres Width 15 metres Depth 2 metres to 4 metres (average 3 metres) Volume = 25 × 15 x 3 = 1125 cubic metres. - 9 years agoHelpfull: Yes(18) No(0)
- probably 1125 i.e (25*15*3)=1125 (taking 3 as the avg height)
- 9 years agoHelpfull: Yes(5) No(0)
- Letz divide the pool into two parts
1st part is the cuboid and 2nd is a cuboid with a triangular base, adding thei respective volume gives the net volume,
volume1=25*15*2=750
volume2=1/2*25*2*15=375
net volume= 750+375=1125 - 9 years agoHelpfull: Yes(5) No(0)
- D) 1125 , (25*15*2) + (25*15*2)/2
- 9 years agoHelpfull: Yes(1) No(1)
- option should be multiple of 25*15, hence option d> is correct
- 9 years agoHelpfull: Yes(0) No(1)
- volume1=l*b*h=25*15*2=750
volume=l*b*h/2=750/2=375
total=volume1+volume2=1125 - 5 years agoHelpfull: Yes(0) No(0)
- l=25
b=15
intialally deep=2
after it increases at 4m deep
avg of deep=2+4/2=3
volume=l*b*h=
25*15*3
=1125 - 5 years agoHelpfull: Yes(0) No(0)
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