Question

A rectangular water Reservoir contains 36000 litres of water. Find the depth of water in the reservoir, if it's base measures 8m by 4m. Also find the surface area of the reservoir.​

Answer 1

water reservior is in the form of cuboid

so volume of cuboid = 36m^3

bcoz 1000litre= 1m^3

now

volume of cuboid =l*b*h

8m*4m*h = 36

h=36/32

h=1.125m

and suface area of cuboid = 2(lb*bh*hl)

=2(8*4+4*1.125+1.125*8)

=2(32+4.500+9)

2*45.500

91m^2