11.9k views
5 votes
In square units, what is the area of the sector that is not shaded?

In square units, what is the area of the sector that is not shaded?-example-1
User Ailie
by
8.4k points

1 Answer

2 votes

Answer:


A = 350\pi \approx 1100

Explanation:

The shaded area is a sector with a central angle of 45 deg.

The total measure of the central angle of a full circle is 360 deg.

The central angle of the unshaded sector is

360 deg - 45 deg = 315 deg

The area of a sector of a circle with a central angle of n degrees and a radius r is


A = (n)/(360)\pi r^2


A = (315)/(360)\pi * 20^2


A = 350\pi \approx 1100

User Frankie Drake
by
8.2k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.