Answer:
r = 5 inches
Step-by-step explanation:
Area of circle, [tex]A=78.5\ in^2[/tex]
It is required to find the radius of the circle. The area of a circle is given by the formula :
[tex]A=\pi r^2[/tex]
r is radius of the circle
[tex]r=\sqrt{\dfrac{A}{\pi}} \\\\r=\sqrt{\dfrac{78.5}{3.14}} \\\\r=5\ \text{inch}[/tex]
So, the radius of the circle is 5 inches.
