Question

The height of a cylinder is 15 cm. and curved surface area is 660 cm2. Find the radius of

the cylinder..​

Answer 1

Answer:

CSA of cylinder 2pie r h

h=15cm

2×22/7×15=660

660/7=660

=7

Step-by-step explanation:

Answer 2

Given,

height = 15 cm

Curved Surface Area (CSA)  = 660  

radius,r = ?

Total Surface Area = ?

VOLUME = ?

--> C S A = 2πrh

660 = 2 x 22/7 x r x 15

660 = 660/7 x r

660 x 7/660 = r

r = 7.

--> T S A = 2π x r x (r + h)

   T S A  = 2 x 22/7 x 7 x (7 + 15 )

   T S A  =  44 x 22

  T S A  =  968 cm^2        

-->   Volume  =   π x r^2 x h    

      Volume  =  22/7 x (7 x 7) x

      Volume  =   22/7 x 49 x 15

      Volume   =  22 x 7 x 15

      Volume  =  2310.

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