501 Geometry Questions

Using the figure below answer questions 383 through 387.

383. An outer ring exists outside of the circle that has a radius of OA,
     but inside the circle that has a radius of OC. What is the area of
     this outer ring?


384. Find the shaded area of the figure.


385. Find the length of AB.


386. Find the length of CD.


387. Although they are defined by the same angle, what is the

relationship between the lengths of arcs CD and AB? What

does this tell you about how arc length relates to angle size

and radius length?

A

C

B D

7.0 in.

45°

O 7.0 in.

501 Geometry Questions