Angle BCD is a circumscribed angle of circle A. Angle BAC measures 53°.

What is the measure of angle BCD?
37°
53°
74°
106°

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122