Question 45
Mensuration of SolidsFind the total area of the surface of a solid cylinder whose base radius is 4cm and height is 5cm
- A.56πcm2
- B.72πcm2
- C.96πcm2
- D.192πcm2
Show the answer and explanation
Answer: B (72πcm2)
Explanation
Total surface = 2πr2 + 2πrh = 2π(16) + 2π(4)(5) = 32π + 40π = 72πcm2.