SOLUTION: a rectangle field has a length that is 7.5 meters longer than its width. its perimeter is 35 meters. What are the dimensions of this field?

Algebra ->  Rectangles -> SOLUTION: a rectangle field has a length that is 7.5 meters longer than its width. its perimeter is 35 meters. What are the dimensions of this field?      Log On


   

Question 1068456: a rectangle field has a length that is 7.5 meters longer than its width. its perimeter is 35 meters. What are the dimensions of this field?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
For a rectangle,
P=2L%2B2W
For this rectangle,
L=W%2B7.5
and
2L%2B2W=35
Substituting,
2%28W%2B7.5%29%2B2W=35
2W%2B15%2B2W=35
4W=20
W=5m
So,
L=5%2B7.5
L=12.5m