A rectangular field is to be fenced on three sides leaving a side of 20 feet uncovered. If the area of the field is 680 sq. feet, how many feet of fencing will be required?

If the diagonal of a square is double, how does the area of the square change?

The perimeter of an isosceles triangle is equal to 14 cm . The lateral side is to the base in the ratio 5 : 4 the area of the triangle is?

A triangle with three equal sides has its area equal to 3?3 sq cm . Find its perimeter .

Square units 13 by 9 of an office area is

If the area of a semi-circle be 77 sq m, find its perimeter.

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