Question

find the volume of a cone whose radius is 3.5 cm and height is 5cm.

Answer 1

radius =3.5cm
height=5cm
volume of cone
=1/3πr²h
1/3×22/7×3.5×3.5×5
=1/3×22×0.5×3.5×5
=1/3×192.5
=64.167cm³

Answer 2

r=3.5
h=5
v=1/3πr²h
  =1/3*22/7*12.25*5
  =22/21*61.25
  = 64.16
∴volume=64.16