Question

Find the area of the shaded region in the figure. (Round your answer to one decimal place.) b=13 angle pi/3

Answer 1

5/6 times the area of the circle plus the area of the equilateral triangle.
\[\frac{5 \pi 13^2}{6}+\frac{\sqrt{3} 13^2}{4}=\frac{169}{12} \left(3 \sqrt{3}+10 \pi \right)=515.6 \]