Examveda

The curved surface area and volume of a cylindrical object are 88 cm2 and 132 cm3, respectively. The height (in cm) of the cylindrical object is:

A. 3$$\frac{2}{3}$$

B. 4$$\frac{2}{3}$$

C. 6

D. 4

Answer: Option B

Solution (By Examveda Team)

Curved area of cylinder = 88 cm2
2πrh = 88
2 × $$\frac{{22}}{7}$$ × r × h = 88
r × h = 14
Volume of cylinder = πr2h = 132 cm3
$$\frac{{22}}{7}$$ × r2h = 132
r2h = 42
r × rh = 42
r × 14 = 42
r = 3
r × h = 14
h $$ = \frac{{14}}{3} = 4\frac{2}{3}$$
Height $$ = 4\frac{2}{3}{\text{ cm}}$$

This Question Belongs to Arithmetic Ability >> Mensuration 3D

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