Question

The width of a rectangle is 7 less than its length. If the area of the rectangle is 198, find the perimeter of the rectangle.

Answer 1

P = 2L + 2W

L = x
W = x - 7...the width is 7 less than the length

Answer 2

Now, you put the variables in for L and W
P = 2(x) + 2(x - 7)

Answer 3

P = 2x+ 2x - 14
P = 4x - 14

Answer 4

l = 7+w
A = l x w
198 = w(7 + w)
w^2 + 7w - 198 = 0
(w + 18)(w - 11) = 0
w = 11 because it cant be negative
l = 18
P = 2(w + l) = 2(11 + 18) = 58
so perimeter = 58m