A solid cylinder of radius 7cm is 10 cm long. Find its total surface area.
A
\(70\pi cm^2\)
B
\(189\pi cm^2\)
C
\(210\pi cm^2\)
D
\(238\pi cm^2\)
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
S = \(2\pi r^2 + 2\pi rh\)
= \(2\pi r(r + h)\)
= \(2\pi (7) (7 + 10)\)
= \(238\pi cm^2\)
Source: Myschool Past Questions Archive (Record #26519)