## Prealgebra (7th Edition)

Circumference = 17$\pi$ The approximation of the circumference = 53.38 $cm^{2}$
Circumference = $\pi$ $\times$ diameter = $\pi$ $\times$ d Circumference = $\pi$ $\times$ 17 = 17$\pi$ cm The approximation of the circumference = 17 $\times$ 3.14 = 53.38 $cm^{2}$