Question

A water body is of cuboidal shape of(Cuboid is a right angled parallel pipped).Its length 20m.When 18 liter water is taken out of the water body,its level goes down by 15 cm.Find the breadth of the water body.

Answer 1

18 litre = 18000cm^3=15*2000*b
B=3/5cm

Answer 2

Answer:

given : length of reservoir = 20cm.

volume of water removed from the reserviour= 18kl = 18cu.m.

water level goes down by 15cm= 15/100m= 0.15m.

let breadth of reservoir= BM.

so, volume of empty reserviour= volume of water removed.

therefore

20×b×0.15 = 18

b. = 18/20×0.15

b = 18/3

b = 6

so, the width of the reservoir is 6m.