91Ó°ÊÓ

Find the area of a regular hexagon with sides \(12 \mathrm{ft}\).

In Exercises \(6-9,\) find the circumference and area of each circle with the given radius or diameter. Leave the answer in terms of \(\pi\). \(d=\frac{4}{3} \mathrm{cm}\)

In Exercises \(6-9,\) find the circumference and area of each circle with the given radius or diameter. Leave the answer in terms of \(\pi\). \(d=12.78 \mathrm{ft}\)

In Exercises \(10-13,\) find the approximate circumference and area of each circle with the given radius or diameter using the calculator to approximate the answer to the nearest hundredth. \(r=4.10 \mathrm{ft}\)

The area of a regular hexagon is \(864 \vee 3\) yd \(^{2}\). Find the length of a side.

Find the area of a square whose apothem measures \(5 \mathrm{cm}\)

In Exercises \(10-13,\) find the approximate circumference and area of each circle with the given radius or diameter using the calculator to approximate the answer to the nearest hundredth. \(r=\frac{3}{4} \mathrm{cm}\)

Find the area of a sector of a circle if the diameter of the circle is \(8.2 \mathrm{cm}\) and the arc of the sector is \(30^{\circ} .\) Give answer correct to the nearest tenth of a square centimeter.

In Exercises \(10-13,\) find the approximate circumference and area of each circle with the given radius or diameter using the calculator to approximate the answer to the nearest hundredth. \(d=12.00 \mathrm{mi}\)

Find the area of an equilateral triangle whose apothem measures 8 in.