What is the total surface area of a cylinder with radius 2cm and height 1.5cm, correct to 2 significant figures?
- 440cm\(^2\)
- 220cm\(^2\)
- 88cm\(^2\)
-
44cm\(^2\)
- 22cm\(^2\)
The correct answer is: D
Explanation
T.S.A of a cylinder = \(2\pi r (r + h)\)
= \(2 \times \frac{22}{7} \times 2 (2 + 1.5)\)
= 44 cm\(^2\)