A solid cylinder of radius 7cm is 10 cm long. Find its total surface area.
-
A.
(70pi cm^2) -
B.
(189pi cm^2) -
C.
(210pi cm^2) -
D.
(238pi cm^2)
Correct Answer: Option D
Explanation
S = (2pi r^2 + 2pi rh)
= (2pi r(r + h))
= (2pi (7) (7 + 10))
= (238pi cm^2)