Question

The radius and the height of a cone are each increased by 20%. Then the volume of the cone increases by

Answer 1

let radius be r
when increase by 20℅ radius =120/100 ×r
=6r\5
let height be h
when h is increased by 20℅ h =6h/5
at previous the volume of cone is
1/3πr^2h

when both increased by 20℅ vol is given by
1/3π(6r/5)2*(6h/5)

to find the increased vol subtract the smaller by greater

hope it is helpful

please Mark as brainleist