Question

A conical pit of top diameter 3.5 m is 12 deep . what is its capacity in kilolitres ?​

Answer 1

Use the given data to find out the radius of the cone,

Given: diameter is 3.5 cm

Height is 12 m deep

Diameter = 2 × radius

Radius = diameter/2

r = 3.5/2

r = 1.75 cm

Substitute the vale of r and h in the formula to find out the volume of the cone,

Vol = 1/3 × π × r²× h

V = 1/3 × 22/7 × 1.75 × 1.75 × 12

V = (22 × 1.75 × 1.75 × 4)/7

V = 38.5m ^ 3

Convert the unit of the volume to kilolitres,

1 kilo liter = 1m³

Therefore,

Vol = 38.5m³

Vol = 38.5m³Vol = 38.5 kilo liters.