Question

Kylie writes an equation to solve for the diameter, d, of the circle shown. Solve Kylie’s equation to find the diameter of the circle. 4 (d + 4) = 72 What is the diameter? 7.5 in. 8.25 in. 11.25 in. 13.25 in.

Answer 1

8.25. Just took the test

Answer 2

8.25 in.

Explanation:

In order to solve this you just have to clear the equation that Kylie created to calcuate the diameter of the circle for diameter, in this case, you just need to do the next steps:

`4(d+4)=7^(2) \\4(d+4)=49\\d+4=(49)/(4) \\d+4=12.25\\d=12.25-4\\d=8.25`

Now we know that the diameter of the circle is 8.25 inches.