## Elementary Geometry for College Students (6th Edition)

c = 16$\pi$ cm A = 64$\pi cm^{2}$
Given the radius of the circle = 8cm The circumference of the circle is given by the formula c= $\pi$ d = 2$\pi$ r =2$\pi$ * 8 = 16$\pi$ cm The area A of a circle whose radius has length r is given by A = $\pi r^{2}$cm = $\pi 8^{2}$ =64$\pi cm^{2}$