Find the total surface area of a cylinder of base radius 5cm and length 7cm ( \pi = 3.14)
A
17.8cm2
B
15.8cm2
C
75.4cm2
D
54.7cm2
E
\(377.0cm^{2}\)
Verified Correct Answer: E.
Step-by-Step Mathematical Solution
The total surface area of a cylinder = 2\pirl + 2\pir2
= 2\pir(l + r)
= 2 \times 3.14 x 5(7+5)
2 \times 3.14 \times 12 x 5
= 377.1cm (1DP)
Source: Myschool Past Questions Archive (Record #40622)