Find the total surface area of a cylinder of base radius 5cm and length 7cm ( π = 3.14)
- 17.8cm2
- 15.8cm2
- 75.4cm2
- 54.7cm2
-
\(377.0cm^{2}\)
The correct answer is: 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 .