Question

in a shower 5 cm of rainfall find the volume of water that falls on 2 hectare of land

Answer 1

1 hectares = 10000 m2 = 10000x100x100 cm2 = 109cm2


Volume of water = AreaxRainfall


= 109 cm2 x 5 cm


= 50000 m3


= 50 x 106 lit  .........since 1000 lit = 1 m3

Answer 2

2 hectare = 200000000 cm
As we know
level raise = volume of the object / area of the base
given level raise = 5cm
area of base = 2 hectare = 200000000 cm
Hence substituting in formula , we get
5 = volume / 200000000
so volume = 1000000000 cm^3
hence the volume of rain = 1000000000 cm^3
That is nothing but 1000 kiloliters
hence volume = 1000 kiloliters
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