Question

the radius and height of a cylinder are in the ratio 2:7 if the CSA of its cylinder is 352cm2.find its radius​

Answer 1

Step-by-step explanation:

Let the radius be 2x and height be 7x

Curved surface area=352sq.cm

⇒2πrh=352

⇒2×

7

22

×2x×7x=352

⇒88x

2

=352

⇒x

2

=

88

352

=4

∴x=2

Hence radius =2×2=4cm