Question

find the radius of the base of a cylinder whose total surface area is 1232 cm square and height is 28 cm.​

Answer 1

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Answer 2

Answer:

12.96 cm

Step-by-step explanation:

Given that,

Total Surface area = 1232 cm

2 π r ( r + h ) = 1232 cm

Where,

r = Radius of the base of a cylinder

h = height of cylinder = 28 cm

and  π = 22 / 7

2 * 22/7 r ( r + 28 ) = 1232

r^2 + 28 = ( 1232 * 7 ) / 44

r^2 + 28 = 196

r^2 = 168

r = 12.96 cm