Question

The CSA and the volume of a pillar are 264m square and 396m cube respectively. Find the diameter and the height of the pillar

Answer 1

hii your answer is in attached image
hope it will help You

Answer 2

CSA=2πrh

2πrh=264......(1)

and Volume = πr²h

πr²h=396......(2)

From 1

2πrh=264

πrh=132.......(3)

In - (2)

πr²h=396

πrh×r=396

132×r=396 (From 3)

r = 3m

Diameter =2r=2×3=6m

Putting the value of r in 3

πrh=132

22/7×3×h=132

h=7×2=14m