Question

The perimeter of a rectangle is 30 cm the length is 9 cm long longer than the width what are the length and width of the rectangle

Answer 1

Step-by-step explanation:

perimeter = 2(length) + 2(width)

let x represent the width of the rectangle

$30 = 2x + 2(x + 9)$

$30 = 4x + 18$

$12 = 4x$

$x = 3$

therefore width = 3 cm

length = 3+9

= 12cm