Answer:
112 in^2
Step-by-step explanation:
The equation to calculate the area of a circle is A=πr^2. We can solve for the radius of the circle by:
1) plugging in our known value, A=7. So 7=πr^2
2) dividing both sides by π.
7/π=r^2
3) square rooting both sides.
Sqrt(7/π)=r
Plug that into a calculator and you get about 1.4927
Now we multiply that by 4, giving us our new radius of about 5.9708
Plugging that number back into the equation A=πr^2 as r will give us 112.
