SOLUTION: Tom wants to enclose a section of his lawn that is 30 yards long and 20 yards wide. He buys 125 yards of fencing. How much fencing is left over?

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: Tom wants to enclose a section of his lawn that is 30 yards long and 20 yards wide. He buys 125 yards of fencing. How much fencing is left over?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 612402: Tom wants to enclose a section of his lawn that is 30 yards long and 20 yards wide. He buys 125 yards of fencing. How much fencing is left over?
Answer by G8TORS(10) About Me  (Show Source):
You can put this solution on YOUR website!
This is a perimeter of a rectangle problem. Perimeter (P) of a rectangle is the sum of all sides
P = 2 x length + 2 x width.
In this problem the Perimeter (P) = The amount needed for the area Tom wants to enclose
Question: How many yards are leftover?
Leftover = Amount bought – amount needed

Given information:
Rectangle = 30 yards long by 20 yards wide
Amount Bought = 125 yards
Step 1: Find the Perimeter(P)of rectangle 30 yards long and 20 yards wide.
P = 2 x length + 2 x width.
P = (2 x 30) + (2 x 20)
P = 60 + 40
P = 100
Step 2: Find the yards leftover.
Leftover = Bought – Needed
Leftover = 125 - Perimeter
Leftover = 125 - 100
Leftover = 25
Answer: 25 yards is leftover