The surface area of a sphere is 616 sq. cm, then what will be its radius?

The length of a diagonal of a cuboid is 11 cm. 63. The surface area is 240 square cm. What is the sum of its length, breadth and height ?

If the difference between the circumference and radius of a circle is 37 cm, then the area of the circle is

A solid is a cone mounted on a hemisphere. Radius=6 cm and total height=14 cm. Surface area?

A metal sphere of radius 9 cm is melted and small balls of radius 0.6 cm are being made from it, the number of small balls are :

If the radii of circles A and B are in the ratio 1.5: 1, then the areas of the circles A and B will be in the ratio