Suppose the area of a square is 169 ft2. How do I find the perimeter?

2 Answers

Oddman Profile
Oddman answered
It is probably easiest to find one side first. That will be √(169 ft^2) = 13 ft.
You know the four sides of the square are all the same length, so the perimeter is
  4*(13 ft) = 52 ft.
Mark Mottian Profile
Mark Mottian answered
We can use algebra. We know that the area of a square is l * b, hence we say

x^2 = 169

SQRT(x^2) = SQRT(169)

x = 13

So one side of the square is 13.

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