Answer:
Surface area of cylinder = 282 .6 square units.
Step-by-step explanation:
Given : A right cylinder has a radius of 3 and a height of 12.
To find : what is its surface area
Solution : We have given that radius = 3
Height = 12.
Surface area of cylinder = 2πr ( r +h)
Surface area of cylinder = 2 *3.14 * 3 ( 3 +12)
= 18.84 (15)
Surface area of cylinder = 282 .6 square units.
Therefore, Surface area of cylinder = 282 .6 square units.
