The curved surface area of a right circular cylinder of base radius 3 cm is…
2019
The curved surface area of a right circular cylinder of base radius 3 cm is 94.2 cm2. The volume (in cm3) of the cylinder is (Take pi = 3.14)
- A.
138.6
- B.
141.3
- C.
125.6
- D.
113.04
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Correct answer: B
Curved surface area = 2 pi r h = 94.2. With r = 3 and pi = 3.14, 18.84h = 94.2, so h = 5. Volume = pi r^2 h = 3.14 x 9 x 5 = 141.3 cm^3.