Question

if the area of s square is 400,then find the perimeter​

Answer 1

Answer:

perimeter is 100

Step-by-step explanation:

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Answer 2

Answer:

Since we’re dealing with a square, the sides are all the same length (by definition, there are four sides, the sides are all the same length and there are four ninety degree angles).

This means with an area of 400 square feet, the equation should be:

400 = x^2

Since to calculate the area, we multiple the height and width by itself. But since the lengths of each are the same, we’ll take the square.

So, to solve, take the square root of both sides, which in this case is +- 20. But a negative length of a square is nonsensical, so we have a length of 20.

As stated before, a square has four equal length sides. Since each side is 20, then we’re looking at 4 * 20 for the perimeter, or 80