Question

Rectangle has area 96 cm².The width is 4 less than than the length.What is perimeter. With EXPLANATION.

Answer 1

Answer:

Perimeter = 40cm

Step-by-step explanation:

Let length = 'm'

Thus, its width = m - 4

According to question:

Area = 96cm^2

m(m-4) = 96

m^2 - 4m - 96 = 0

(m - 12)(m + 8) = 0

Thus, m = 12cm

Hence, Length = 12cm

Width = 12 - 4 = 8cm

So,

Its Perimeter = 2(12 + 8)

= 2(20)

= 40 cm

:)