Question

a swimming pool is 140 m long and 80m wide. If 56000 cubic metres of water is pumped into it ,find the rise in the water level.

Answer 1

Let the rise in the water level be xm
Then,
L=140m
B=80m
H=xm
Volume= 56000m^3
Lxbxh=Volume
140x80x x=56000
x=56000/140x80
x = 5m [Ans]

Answer 2

l = 140 m
b= 80 m
volume = 56000 m3
since the volume of a cuboid is l×b×h
56000=80×140×h
therefore,
h=56000/(80×140)
h = 560/(8×14)
h=5 m
hence the rise in the water level would be 5 metres