An error 2% in excess is made while measuring the side of a square. The percentage of error in the calculated area of the square is:

The diagonals of two squares are in the ratio of 3 : 2. Find the ratio of their areas.

A rectangle has 15 cm as its length and 150 cm 2 as its area .Its area is increased to 1 1 / 3 times the original area by increasing only its length . Its new perimeter is?

The wheel of an engine turns 350 times round its axle to cover a distance of 1.76 km. The diameter of the wheel is

The length and breadth of a playground are 36 m and 21 m respectively. Flagstaffs are required to be fixed on all along the boundary at a distance of 3 m apart. The number of flagstaffs will be?

The Different between the length and breadth of a rectangle is 23 m. If its perimeter is 206 m, then its area is

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