Question

The area of a square playground (in square feet) can be represented by x2 - 30x + 225. How many feet is the perimeter of the playground if x = 25?

Answer 1

Answer:

40

Step-by-step explanation:

Substitute 25 for x

${25}^{2} - 30(25) + 225 = 100$

100 is the area of the square so that means

10 is the side length of each side of the square.

Multiply 4 by 10 to get the perimeter.

$4 \times 10 = 40$