The volume of a cone of radius 7 cm and slant height 14 cm is ______.
(use π=227)
Given,
Radius of the cone
r=7 cm
Slant height of the cone
l=14 cm
From the pythagoras theorem
l2=h2 + r2,
height of the cone
h=√142−72
h=√147=12.1243 cm
Volume of a Cone
=13×π ×r2h
=13×227×72×12.1243
=622.381 cm3