Question

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

`["Assume "pi=22/7]`

 

Answer 1

Radius (r) of pit = (3.5/2)m = 1.75 m

Height (h) of pit = Depth of pit = 12 m

`"Volume of pit "=1/3pir^2h`

`=[1/3xx22/7xx(1.75)^2xx12]cm^3`

= 38.5 m³

Thus, capacity of the pit = (38.5 × 1) kilolitres = 38.5 kilolitres