Question

a conical pit having top diameter 3.5 m is 12 m deep what is the capacity in litres

Answer 1

d=3.5m
r=3.5/2m
h=12m
Volume of pit=1/3πr^2h
=1/3×22/7×3.5/2×3.5/2×12
=38.5m^3
1m^3=1000l
Therefore capacity in litres=38.5×1000
=38500l