## Basic College Mathematics (10th Edition)

$Circumference \approx 8.2$ m $Area \approx 5.3$ m$^{2}$
1. Find the circumference of the circle using the formula $= \pi \times diameter$ Let $C =$ the circumference of the circle $C = \pi \times 2.6$ $C = 3.14 \times 2.6$ $C = 8.164$ m $C \approx 8.2$ m 2. Find the area of the circle using the formula $= \pi r^{2}$ Let $A =$ the area of the circle $A = \pi (r)^{2}$ $A = (3.14)(\frac{2.6}{2})^{2}$ (Since radius $= \frac{diameter}{2}$) $A = (3.14)(1.3)^{2}$ $A = (3.14)(1.69)$ $A = 5.3066$ m$^{2}$ $A \approx 5.3$ m$^{2}$