Question

The length of a rectangle is 1 cm longer than its width. The area of the rectangle is 36 sq. cm. Find the perimeter of the rectangle.

Please help me thank you

Answer 1

length = x + 1

width = x

(x + 1) × x = 36

x² + x = 36

x² + x - 36 = 0

x = 5.5208 (quadratic formula)

2(5.5..) + 2(5.5..) + 2 = 24.0832

perimeter = 24.08 (2dp)