SOLUTION: manuel is helping his father fence their back yard for a new puppy. The yard is in the shape of a square and has an area of 900. what is the side length and how much fencing do

Algebra ->  Customizable Word Problem Solvers  -> Geometry -> SOLUTION: manuel is helping his father fence their back yard for a new puppy. The yard is in the shape of a square and has an area of 900. what is the side length and how much fencing do      Log On

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Question 227424: manuel is helping his father fence their back yard for a new puppy. The yard is in the shape of a square and has an area of 900.
what is the side length and how much fencing do they need to complete the project?

Answer by LtAurora(115) About Me  (Show Source):
You can put this solution on YOUR website!
The area for a square is:
L%2AW=A
Since L and W are the same, call it a side (S):
S%5E2=A
So, plug in our area:
S%5E2=900
Take the square root of 900:
S=30, which is the length of the side
To find how much fencing, add up all 4 sides:
S%2BS%2BS%2BS=P
4S=P
4%2A30=P
120=P, which is our total fencing needed.