Question

What is the perimeter, in feet, of a square whose area is 9 square feet

Answer 1

the length and width of the square is each 3 ft so (3+3+3+3) or (3*4) Then the perimeter is 12 ft

Answer 2

12 feet.

Explanation:

Note that by definition of a square, all side measurements are the same (as all sides are congruent).

You can solve the area of square by using the following equation:

A (square) = s²

A (square) = side x side.

Plug in 9 for A in the equation:

9 = s²

Isolate the variable, s. Root both sides:

√9 = √s²

s = √9 = √(3 * 3) = 3

One side of the square is 3 feet.

Next, solve for the perimeter. A square has 4 congruent sides, so multiply 3 with 4:

3 x 4 = 12 feet

12 feet is your answer.

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