Question

If the area of a square is 16, what is the perimeter?A. 2B. 4C.8D. 16

Answer 1

We know that the area of a square is given by the following formula:

`A=s^2`

Using the known value we can find s (the side of the square):

`\begin{gathered} 16=s^2 \\ s=\sqrt[]{16} \\ s=4 \end{gathered}`

The perimeter of a square is:

`P=4s`

Use the value of s to find the perimeter:

`P=4\cdot4=16`

The perimeter is also 16. The correct choice is D.