Step-by-step explanation:
In order to find the area, we need to find the radius. In order to find the radius, we need to divide 10 by 2 because the radius is half of the diameter.
10 ÷ 2 = 5
[tex]A=r^2\pi[/tex]
[tex]A=(5)^2\pi[/tex]
[tex]A=25\pi[/tex]
[tex]A=78.5[/tex]
So, the area of the circle (given that the diameter is 10) is 78.50 in².
