Question

The diameter of a cylinder is 7 cm and the area of its curved surface is 1320 cm². The height of the cylinder is _______ cm.(a) 120
(b) 60
(c) 30
(d) 150

Answer 1

Hey there!!

First. the formula : -

Curved surface area of a cylinder = 2πrh

( or )

dπh

d = diameter

as 2r = diameter

7 ( 22 ÷ 7 ) ( h ) = 1320

22h = 1320

h = 1320 ÷ 22

h = 60 cm

__________

Option ( b )

Answer 2

HELLO FRIEND ,

HERE IS YOUR ANSWER ,

Given,
Diameter= 2× radius = 13 cm
Curve surface Area of cylinder = 1320 cm^(2)

so,

2pi×r×h= 1320
22/7 × 7 × h = 1320

then h is equal to 60

I HOPE THIS WILL HELP YOU TO UNDERSTAND ....!!!!!!!