how do i do this?

Question

A rectangle has a perimeter of 34 inches its length is 5 inches more than its with width find the dimensions of the rectangle.

Answer 1

Perimeter = 2l + 2w 

 

length = w + 5 

 

w = w 

 

plug and chug: 

 

34 = 2(w + 5) + 2w 

 

34 = 2w + 10 + 2w 

 

34 = 4w + 10 

 

24 = 4w 

 

6 = w 

 

Thus, 

 

l = 11