The length of a rectangle is 3 m longer than its width. If the perimeter of the rectangle is 42 m , find its area.

Answer 1

Let x = width

then because "length of a rectangle= 3 m longer than its width"

( x+3 = length)

P=rectangle:

2(width + length)

therefore

38 = 2(x + x+3)

38 = 2(2x+3)

32 = 4x

x=32/4

x=8m (width)

.

length:

x+3 = 8+3 = 11 m (length)

then

Area Rectangle is = L*W

= 11 * 8

=88 square m