If the base of a rectangular is increased by 10% and the area is unchanged , then the corresponding altitude must to be decreased by?

In a circle of radius 21 cm an arc subtends an angle of 72° at the centre. The length of the arc is?

If the ratio of the area of two square is 9 : 1 the ratio of their perimeters is?

The radius of a circular field is 25 m. Find the area of the field.

The base of a parallelogram is twice its height. If the area of the parallelogram is 338 sq.cm. Find its height?

If the side of a square is increased by 25%, then how much percent does its area get increased?

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