Question

The length of a rectangle is 5 ft longer than its width. If the perimeter of the rectangle is 38 ft , find its area.

Answer 1

Ok so basically L=5+w
w=w
P=38
and A=?
well we know that P=all the four sides added so
38=2(5+w)+2w
38=10+2w+2w
38=10+4w
28=4w
w=7
so if L=w+5 then L=7+5 so L=12
A=LxW so A=12x7 A=84