Sides of a triangle are 13 cm, 84 cm and 85 cm. Find its area(in square cm)?

By increasing the radius of a sphere by 50 percent, how much will the area of its surface increase?

From a solid cylinder whose height is 12 cm and diameter 10 cm a conical cavity of same height and same diameter of the base is hollowed out. The volume of the remaining solid is (cm³)approximately .Π=22/7

A solid metallic sphere of radius x cm is melted and then drawn into 126 cones each of radius 3.5 cm and height 3 cm. There is no wastage of material in this process. What is the value of x?

The total surface area of a cube is 864 square cm. What is his volume?

A square pyramid with side 10 cm has a volume of 400 cm³. Find the total surface area of the pyramid.

The area of triangle is half the area of square. The perimeter of the square is 224 cm. What is the area of triangle?

In the given figure, two squares shown in the figure have the arm of 12 cm and 8 cm. then find out the area of shaded part?