Question 29
Mensuration of SolidsWhat is the total surface area of a closed cylinder of height 10 cm and diameter 7 cm? (Take π = 22/7)
- A.77 cm2
- B.227 cm2
- C.297 cm2
- D.374 cm2
Show the answer and explanation
Answer: C (297 cm2)
Explanation
2πr(r + h) = 2 × 22/7 × 3.5 × 13.5 = 297 cm2.