Question

A circular mirror has a diameter of 12 inches. What is the are of the mirror in Square inches

Answer 1

Answer:

113.14 square inches

Step-by-step explanation:

Area of circle is given by $\pi r^{2}$ where r is the radius. The radius is usually half the diameter hence for this case the radius will be 0.5*12=6 inches.

Taking $\pi$ as $\frac {22}{7}$ then the area will be$\frac {22\times 6^{2}}{7}=113.14285714285714285714285714285714285714\ in^{2}\approx 113.14 in^{2}$

Therefore, rounded off to 2 decimal places the area is approximately 113.14 square inches