Question 54
The height of a cylinder is 3 cm more than the radius of its base. If the height is 10 cm, then what is the volume of this cylinder? [Use $$\pi = \frac{22}{7}$$]
Solution
The height of a cylinder is 3 cm more than the radius of its base. If the height is 10 cm.
height of a cylinder = 3 cm + radius of its base
10 cm = 3 cm + radius of its base
radius of its base = 10 cm - 3 cm
= 7 cm
Volume of this cylinder = $$\pi\ \times\ radius^2\times\ height$$
= $$\frac{22}{7}\times\ 7^2\times\ 10$$
= $$22\times\ 7\times\ 10$$
= 1540 $$cm^3$$
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