Perimeter of a rectangular concrete slab is 102 feet and it's area is 560 ft.² what is the length of the longer side of the slab

The longer length is 35ft

Step-by-step explanation:

Given

Required

Determine the longer length

Represent the length with L and width with W

So, we have:

--- Area

--- Perimeter

Divide both sides by 2 in:

Make L the subject:

Substitute 51 - W for L in

Reorder the equation

Expand

Split:

This implies that the longer length is 35ft

there is no picture in order for this question to be answered

if i did my math right then the answer should but 108