Question

The width of a rectangle is x cm. The length of the

x + 5
rectangle is (x + 5) cm.
Find an expression, in
terms of x, for the
perimeter of the rectangle.
Give your answer in its
simplest form.
X

Answer 1

(4x + 10) cm

Explanation:

Given:

A rectangle

l (length) = (x + 5) cm

w (width) = x cm

Find: P (perimeter) - ?

The perimeter is the sum of all side lengths (there are 2 sides of width x and 2 sides of length (x + 5)):

P = 2x + 2(x + 5) = 2x + 2x + 10 = 4x + 10