Question

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

Answer 1

113.14 square inches

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* 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