need help finding the indicated measures for the circle show. already have the answers but i want to know the steps.

Given:
Given that a circle, with two points
[tex]\begin{gathered} A(5,0) \\ B(3,4) \end{gathered}[/tex]Required:
To find, circumference, arc length, area of the circle and area of the shaded region.
Explanation:
The radius of the given circle is 5 unit.
The circumference is,
[tex]\begin{gathered} C=2\pi r \\ =2\times\pi\times5 \\ =10\pi \end{gathered}[/tex]Now the area of the entire circle is,
[tex]\begin{gathered} A=\pi r^2 \\ =\pi\times5^2 \\ =25\pi \end{gathered}[/tex]