Find the total surface area of a cylinder of base radius 5cm and length 7cm ( π = 3.14)
-
A.
17.8cm2 -
B.
15.8cm2 -
C.
75.4cm2 -
D.
54.7cm2 -
E.
(377.0cm^{2})
Correct Answer: Option E
Explanation
The total surface area of a cylinder = 2πrl + 2πr2
= 2πr(l + r)
= 2 × 3.14 x 5(7+5)
2 × 3.14 × 12 x 5
= 377.1cm (1DP)
There is an explanation video available below.