The radius of the base of a cylinder is 14 cm and its volume is 6160 cm3. The curved surface area (in cm2) is: $$\left( {\pi = \frac{{22}}{7}} \right)$$
A. 880
B. 940
C. 778
D. 660
Answer: Option A
Solution (By Examveda Team)
r = 14 cmπr2h = 6160 cm3
Curved surface area = ?
$$\frac{{22}}{7}$$ × 14 × 14 × h = 6160
h = 10
Curved surface area = 2πrh
= 2 × $$\frac{{22}}{7}$$ × 14 × 10
= 880 cm2
This Question Belongs to Arithmetic Ability >> Mensuration 3D
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A sphere and a hemisphere have the same volume. The ratio of their curved surface area is:
A. $${2^{\frac{3}{2}}}:1$$
B. $${2^{\frac{2}{3}}}:1$$
C. $${4^{\frac{2}{3}}}:1$$
D. $${2^{\frac{1}{3}}}:1$$
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