Advertisements
Advertisements
Question
The diameter of the base of a right circular cylinder is 42 cm and its height is 10 cm. Find the volume of the cylinder.
Solution
Diameter, d = 42 cm
\[\text{ Radius, r }= \frac{d}{2} = 21 cm\]
Height, h = 10 cm
\[\text{ Volume of the cylinder, }V = \pi r^2 h\]
\[ = \frac{22}{7} \times {21}^2 \times 10\]
\[ = 13860 {cm}^3\]
APPEARS IN
RELATED QUESTIONS
The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find
(i) Its inner curved surface area,
(ii) The cost of plastering this curved surface at the rate of Rs 40 per m2.
`["Assume "pi=22/7]`
Twenty cylindrical pillars of the Parliament House are to be cleaned. If the diameter of each pillar is 0.50 m and height is 4 m. What will be the cost of cleaning them at the rate of Rs. 2.50 per square metre?
Find the volume of a cylinder whose r = 3.5 cm, h = 40 cm .
Find the volume of a cylinder, if the diameter (d) of its base and its altitude (h) are: d = 7 m, h = 24 m .
A rectangular sheet of paper, 44 cm × 20 cm, is rolled along its length to form a cylinder. Find the volume of the cylinder so formed.
A cylindrical water tank of diameter 1.4 m and height 2.1 m is being fed by a pipe of diameter 3.5 cm through which water flows at the rate of 2 metre per second. In how much time the tank will be filled?
Find the length of 13.2 kg of copper wire of diameter 4 mm, when 1 cubic cm of copper weighs 8.4 gm.
The height of sand in a cylindrical shaped can drops 3 inches when 1 cubic foot of sand is poured out. What is the diameter, in inches, of the cylinder?
The volume of a solid cylinder is 7700cm3. Find its height and total surface area if the diameter of its base is 35cm.
The ratio of the radius and height of a cylinder is 2:3. If its volume is 12,936 cm3, find the total surface area of the cylinder.
