Arthur D. answered 07/15/19
Tutor
5.0
(256)
Forty Year Educator: Classroom, Summer School, Substitute, Tutor
P=2l+2w
l=w+4
P=2(w+4)+2w
P=2w+8+2w
P=4w+8
36=4w+8
36-8=4w
28=4w
w=28/4
w=7
l=7+4
l=11
A=lw
A=11*7
A=77 sq cm