The sum of the radius of the base and the height of a solid cylinder is 96 metres. If the total surface area of the cylinder is 12672 m², what are the curved surface area and volume of the cylinder respectively? (use π = 22/7)
- A.9900 m², 103950 m³
- B.8600 m², 105850 m³
- C.9500 m², 113550 m³
- D.7660 m², 93990 m³
Explanation
2πr(r+h) = 12672 ⇒ r = 21, h = 75; CSA = 2πrh = 9900 m²; volume = πr²h = 103950 m³.