The volume of a glass in the shape of a cylinder whose height is 3 times the radius is 81π m3.The height of the cylinder is:
9m
6m
3m
1m
πr2h=81π
⇒h=3r
⇒r=h3
πh39=81π
Therefore, h=9 m.
The figure consists of 2 cylinders, the inner cylinder is a solid cylinder whose radius is r and the outer cylinder is a hollow cylinder whose radius is R and height is h, the volume of fluid it can hold is:
If a tank is in the shape of a right circular cylinder whose radius and height are 7 cm and 14 cm respectively, then the capacity of cylinder is ___ ×10−4 m3.
The volume of a cylinder whose height is 12m and radius is 7m is ___ m3