Question

Find the area of the lighter shaded region
-it’s 80 degrees inside the triangle

Answer 1

9514 1404 393

Answer:

5.1 cm²

Explanation:

The area of a sector is given by ...

A = 1/2r²(θ -sin(θ)) . . . . where θ is the central angle in radians.

For this geometry, the area is ...

A = (1/2)(5 cm)²(80π/180 -sin(80°)) ≈ 5.1 cm²