Question

the area of a rectangular sandbox can be expressed as 72xy + 18x the width of the sandbox is 9x what is the perimeter of the sandbox

Answer 1

18x +16y +4

Explanation:

The area is the product of length and width, so the length is ...

A = LW

L = A/W = (72xy +18x)/(9x) = 8y +2

The perimeter is double the sum of length and width:

P = 2(L +W) = 2(8y +2 +9x)

P = 18x +16y +4 . . . . the perimeter of the sandbox