## Basic College Mathematics (9th Edition)

$Circumference \approx 9.4$ in. $Area \approx 7.1$ inches$^{2}$
1. Find the circumference of the circle Let $C =$ the circumference of the circle $C = \pi \times 3$ $C = 3.14 \times 3$ $C = 9.42$ in. $C \approx 9.4$ in. 2. Find the area of the circle $Let A =$ area of the circle $A = \pi r^{2}$ $A = (3.14)(\frac{3}{2})^{2}$ (Since radius $= \frac{diameter}{2}$) $A = (3.14)(1.5)^{2}$ $A = (3.14)(2.25)$ $A = 7.065$ inches$^{2}$ $A \approx 7.1$ inches$^{2}$