Radius of the base and height of a cone are 5 cm and 12 cm respectively. Find its slant height.

Find the values and arrange in increasing order:

(A) If each edge of a cube is increased by 20%, then the percentage increase in its volume is:

(B) If the radius of a cylinder is increased by 20%, while height increase 10%, then the percentage increase in the volume of the cylinder

(C) If each edge of a cube is increased by 20%, then the percentage increase in its surface area is:

(D) If the radius of a sphere is increased by 10%, then the percentage increase in its volume is:

Choose the correct order:

If a metallic rod of 10 cm length and 2 cm radius is stretched into a wire of 40 m length having uniform thickness, then find the radius of the stretched wire.

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?

The surface area (in $m^2$) of a sphere of radius 7 cm is:

Use $\pi = \frac{22}{7}$

The volume of a sphere of radius r is obtained by multiplying its surface area with:

A right circular metal cone (solid) is 42 cm high and its radius is $\frac{21}{2}$ cm. It is melted and recast into a sphere. Then the radius of the sphere will be: