If the sum of radius and height of a solid cylinder is 20 cm and its total surface area is 880 cm2 then its volume is
A. 1760 cm3
B. 8800 cm3
C. 2002 cm3
D. 4804 cm3
Answer: Option C
Solution (By Examveda Team)
r + h = 20 . . . . . . (i)
Total surface area = 880
2πr(h + r) = 880
2 × $$\frac{{22}}{7}$$ × r × 20 = 880
r = 7, h = 13
Volume = πr2h
= $$\frac{{22}}{7}$$ × 7 × 7 × 13
= 154 × 13
= 2002 cm3
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. $${2^{\frac{3}{2}}}:1$$
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C. $${4^{\frac{2}{3}}}:1$$
D. $${2^{\frac{1}{3}}}:1$$
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