A cylinder, opened at one end, has a radius of 3.5cm and height 8cm. calculate the total surface area
- 126.5cm\(^2\)
- 165.0cm\(^2\)
- 212.0cm\(^2\)
-
214.5cm\(^2\)
The correct answer is: D
Explanation
The surface area of an open-top cylinder = Οr(r + 2h),
where 'r' is the radius and 'h' is the height of the cylinder.
= \(\frac{22}{7}\) * 3.5 (3.5 + 2 * 8)
= 11 (3.5 + 16) β 11 (19.5)
= 214.5cm\(^2\)