In the diagram, the base diameter is 14cm while the height is 12cm. Calculate the total surface area if the cylinder has both a base and a top.[(pi frac{22}{7})]
-
A.
836cm2 -
B.
308cm2 -
C.
528cm2 -
D.
154cm2
Correct Answer: Option A
Explanation
Area(S) = 2(pi r^2 + 2 pi rh = 2pi r(h + r))
D = 14cm, 2r = D
r = (frac{D}{2})
= 7cm
S = 2 x (frac{22}{7} times [7 + 12] = 44 times 19)
= 836cm2