#### Answer

C = 10$\pi$ in
A = 25$\pi in^{2}$

#### Work Step by Step

Given the diameter of the circle = 10 in
So radius = $\frac{d}{2}$ = 5 in
The circumference of the circle is given by the formula
c= $\pi$ d = 2$\pi$ r
=2$\pi$ * 5 = 10$\pi$ in
The area A of a circle whose radius has length r is given by
A = $\pi r^{2}$cm
= $\pi 5^{2}$
=25$\pi in^{2}$