A conical pit of diameter 3.5 m is 12 m deep. What is its capacity in kilolitres ?
HINT `1 m^(3)=` kilolitre

Answer

38.5 kL

Explanation

`r = (7)/(4) m and h = 12m`
Capacity = its volume `= (1)/(3) pi r^(2) h = ((1)/(3) xx (22)/(7) xx (49)/(16) xx 12) m^(3)`
`= (77)/(2) m^(3) = 38.5 m^(3) = 38.5 kL " " [1m^(3) = 1kL]`