The curved surface area of a right circular cylinder of height 14 cm is 88 cm$^2$. The diameter of the base of the cylinder is $\left(\text{Use } \pi = \frac{22}{7}\right)$ :

How many meters of cloth 6 metre wide will be required to make a conical tent, the radius of whose base is 21m and height is 20m?

A rectangular block with a volume of 250 cm³ was sliced into two cubes of equal volume. How much greater (in sq.cm) is the combined surface area of the two cubes than the original surface area of the rectangular block?

If the ratio of the radii of the sphere and hemisphere is √3:2, then determine the ratio of their total surface area?

In what ratio are the volumes of a cylinder, a cone and a sphere, if each has the same diameter and the same height?

A hemisphere of radius 4 cm is cut from a solid sphere of radius 4 cm. What is the remaining volume of the sphere? (Use $\pi \approx 3.14$)

Arrange the volumes of the following geometrical figures in decreasing order of their value.

A. A cuboid of length 5 cm, breadth 3 cm and height 4 cm.

B. A cube on each side of 4 cm.

C. A cylinder of radius 3 cm and length 3 cm.

D. A sphere of radius 3 cm.

Choose the correct answer from the options given below: