Week 13 Test

Front

How many degrees are in a circle?

Back

360 degrees.

Front

What is the formula for finding the area of a circle?

Back

The formula is π r², where r is the radius of the circle.

Front

What is the arc length of a minor arc in a circle?

Back

The arc length can be calculated using the formula: Arc Length = (θ/360) * 2πr, where θ is the central angle in degrees and r is the radius.

Front

How do you express the area of a circle in terms of π?

Back

The area of a circle can be expressed as A = πr².

Front

What is the relationship between the radius and diameter of a circle?

Back

The diameter is twice the length of the radius. (d = 2r)

Front

What is the formula for the circumference of a circle?

Back

The circumference can be calculated using the formula: C = 2πr.

Front

How do you convert degrees to radians?

Back

To convert degrees to radians, multiply by π/180.

Front

What is the measure of a right angle in degrees?

Back

A right angle measures 90 degrees.

Front

What is the formula for finding the area of a sector of a circle?

Back

The area of a sector can be calculated using the formula: Area = (θ/360) * πr².

Front

What is the relationship between the central angle and the arc length?

Back

The arc length is directly proportional to the central angle.