The length of a rectangle is 4 cm greater than its width The perimeter is 32 cm. Find the length of the rectangle?

w= width
w+4=length
2(w+l)= perimeter
2(w+w+4)=32 substitution
2(2w+4)=32
4w+8=32 distributive property
4w=32-8 subtraction property of equality
4w=24
w=6 division property of equality
length is 6+4 or 10cm.