Question

Find the area of each circle with the given radius or diameter. Use 3.14 for i. 3. r=7 yd

Answer 1

153.86 yd²

1) Since the area of a circle is found by this formula:

$A\text{ =}\pi\cdot r^2$

2) Let's plug into that the given information:

$\begin{gathered} A\text{ =}\pi\cdot r^2 \\ A=3.14\cdot(7)^2 \\ A\text{ =3.14 }\cdot49 \\ A=153.86yd^2 \end{gathered}$

3) Hence, the area of this circle is 153.86 yd²