Question

Find the area of the shaded region. Use 3.14 for pi. Round to the nearest tenth.

r = 15
110

Answer 1

110/360=11/36 (I will get back to this)

The area of the circle would be 225 pi using the formula pi r^2. So you multiply 225pi by 11/36 to find the area. This rounds to 215.98

Answer 2

Answer: 490.6

Explanation:

There are 360 degrees of a triangle. As 110 degrees are not shaded, you can determine that 250/360, or 25/36 of the degrees in the triangle are shaded. Then simply find the area of the circle by doing πr^2 and getting 706.5. Then simply multiply 706.5 * 25/36 to get 490.625, or 490.6 when rounding to the nearest tenth