Base of a right pyramid is a square. The length of diagonal of the base is cm. If each lateral surface of the pyramid is an equilateral triangle, then its volume (in cu.cm) is

42 cm a circular wire of diameter is folded into a rectangle whose sides are in the ratio 6: 5. What will be the area of the rectangle?

What is the area of an equilateral triangle having altitude equal to cm.

A spherical ball of lead 3 cm in diameter is melted and recast into three spherical balls The diameter of two of these are 1.5 cm and 2 cm respectively. The diameter of the third ball is 

If the curved surface area of a right circular cone is 10010 sq cm and its slant height is 91 cm, find its total surface area.

The volume of a prism is 288cm³ and height is 24cm. The area of the base of the prism (cm²) is:

The measure of a cuboid warehouse is (8 m x 6 m x 3 m). If each sack covers 0.48 cubic meters of space, how many maximum sacks can be kept in it?

The diameter of a roller is 84 cm and its length is 120 cm. It makes 500 complete revolutions to move once over to level a playground. Find the area of the playground.