Question

The rain falls 10cm on a particular day. The rain water that fals on a roof 70m long and 44m wide was collected in a cylindrical tank of radius 14m, find:- (a) Volume of the that falls on the roof. (b)Rise of water level in the tank due to rain water

Answer 1

volume of that fall on the roof=70x44x (0.1)=308m^3
volume of tank water=volume of fall water on the roof
pi.(14)^2.h=308
h=308/44x14
=1/2m

Answer 2

Rain falls = 10 cm = 0.1 m
Length of roof = 70 m
Breadth of roof =44 m
Volume of water falls on the roof = L × B × H
= 70 × 44 × 0.1
= 308 cu m
Radius of water tank = 14 m
Volume of water in tank = pie r square h
308 cu m = 22/7 × 14 × 14 × h
h = 308/22×2×14
h=1/2
Hence, height = 1/2 m