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?

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?

The diameter of a wheel is 14 cm. How many rotations will it take to cover a distance of 44 kilometres?

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