Question

How to find the height if radis is 5cm and total surface area is 120πcm2 in a cylinder

Answer 1

Answer:

TSA of cylinder = 2pir (r+h)

Answer 2

Answer:

since the formula of TSA of cylinder=

$2\pi \: r(r + h)$

ATQ

2 pi 5(5+h)=120 pi

pi will cancel out

we will get

10(5+h) = 120

5+h=120/10

5+h=12

h=12-5

h= 7

this is ur answer

hope its helpful...