Question

need help setting up this equation

Answer 1

5x = length
4x = width
324 = perimeter
formula: P = 2(length) + 2(width)

324 = 2(5x) + 2(4x)
324 = 10x + 8x
324 = 18x
18 = x
Substitute the value of x = 18
Length = 5x = 5(18) = 90meters
Width = 4x = 4(18) = 72meters