Circumference and Arc Length

Question 1

Circle P has a circumference of approximately 75 inches.

Revolt · Accepted Answer

12 inches

Question 2

Circle O has a circumference of approximately 250π ft.

Revolt · Accepted Answer

250 ft

Question 3

Two similar circles are shown. The circumference of the larger circle, with radius OB, is 3 times the circumference of the smaller circle, with radius OA.

Revolt · Accepted Answer

6πx units

Question 4

In circle M, diameters JL and HK each measure 16 centimeters.

Revolt · Accepted Answer

3.5 cm

Question 5

Circle Q has a circumference of approximately 50 centimeters.

Revolt · Accepted Answer

15.9 centimeters

Question 6

An arc on a circle measures 125°. The measure of the central angle, in radians, is within which range?

Revolt · Accepted Answer

to π radians

Question 7

Two circles are shown in the diagram.Since all circles are similar, a proportion can be set up using the circumference and diameter of each circle. Substitute the values d1 = 1, C1 = π, and d2 = 2r into the proportion.Which shows how to correctly solve for C2, the circumference of any circle with radius r?

Revolt · Accepted Answer

Because

Question 8

Circle O has a circumference of approximately 44 in.

Revolt · Accepted Answer

14 in.

Question 9

Minor arc KL measures 135°.

Revolt · Accepted Answer

radians

Question 10

Arc CD is of the circumference of a circle. What is the radian measure of the central angle?

Revolt · Accepted Answer

radians

Circumference and Arc Length Answers

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