SOL Grades 6-8 Measurement and Geometry. Practice it free.

$SA = 4 \pi r^{2} = 4 \times 3 \times 1 = 12$.

Each congruent angle is $\dfrac{180^{\circ} - 124.8^{\circ}}{2} = 27.6^{\circ}$.

A hexagon has $6$ sides: $(6-2) \times 180 = 720°$.

The right angle measures $90^{\circ}\textsf{,}$ and the sum of the interior angles of a triangle is $180^{\circ}\textsf{.}$ The other acute angle measures $180^{\circ} - 90^{\circ} - 22^{\circ} = 68^{\circ}\textsf{.}$

$90 - 10 = 80°$.

The circumference of a circle is $C = 2\pi r$. Substitute $r = 8$: $C = 2\pi(8) = 16\pi\textsf{.}$

Trapezoid area $= \dfrac{1}{2}(b_1 + b_2) \cdot h = \dfrac{1}{2}(6 + 10) \cdot 7 = \dfrac{1}{2}(16) \cdot 7 = 56$.

$C = \pi d = 3 \times 6 = 18$.