SOLUTION: I have no idea how to do this!! Can someone please walk me through the process??? Find a polynomial for the perimeter and for the area: (it is a rectangle) one side: a+7 an

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I have no idea how to do this!! Can someone please walk me through the process??? Find a polynomial for the perimeter and for the area: (it is a rectangle) one side: a+7 an      Log On


   

Question 251172: I have no idea how to do this!! Can someone please walk me through the process???
Find a polynomial for the perimeter and for the area: (it is a rectangle)
one side: a+7
another side: a
Thank you
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
The perimeter is simply the sum of the four sides. In other words, just add up the four sides to get the perimeter. So P=a%2Ba%2B%28a%2B7%29%2B%28a%2B7%29=4a%2B14. So the perimeter is P=4a%2B14


The area is the product of the two sides. This means that the area is the result of multiplying the two sides together. So A=a%28a%2B7%29=a%5E2%2B7a giving us the area of A=a%5E2%2B7a