SOLUTION: a square rug has an area of 91 square feet. what is a good approximation of the perimeter of the rug?

Question 1131281: a square rug has an area of 91 square feet.
what is a good approximation of the perimeter of the rug?
Found 2 solutions by Theo, ikleyn:
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
if the rug is square, then the formula for the area of the rug is A = S^2.

since A = 91, then the formula becomes 91 = S^2.

solve for S to get S = sqrt(91).

the formula for the perimter of the square rug is 4S = P

since S = sqrt(91), then the formula becomes 4 * sqrt(91) = P.

the perimeter is equal to 4 * sqrt(91).

sqrt(91) is approximately equal to 9.539392014 feet.

4 * sqrt(91) is approximately equal to 38.15756806 feet.

Answer by ikleyn(52781) (Show Source): You can put this solution on YOUR website!
.

Good approximation is 38.16 feet. 38.15756806 feet is not a good approximation.

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