Arc Measures

​Take notes on your notebook. You will submit a picture of your notes after completing this assignment.

Multiple Select

Which of the following can be used to calculate the circumference of a circle? (SELECT ALL THAT APPLY)

• $$C=2\pi r$$

• $$C=\pi r^2$$

• $$A\ =\ \pi r^2$$

• $$C=\pi d$$

Multiple Choice

Calculate the circumference, $$2\pi r$$ , of the circle. (Leave answers in terms of $$\pi$$ . Do not round your answer.)

• $$4\pi$$ m

• $$1\pi$$ m

• $$2\pi$$ m

Multiple Choice

Calculate the circumference, $$2\pi r$$ , of of the circle. (Leave answers in terms of $$\pi$$ . Do not round your answer.)

• $$3\pi$$ yd

• $$12\pi$$ yd

• $$6\pi$$ yd

Multiple Choice

Calculate the circumference of the circle. (Leave answers in terms of $$\pi$$ . Do not round your answer.)

• $$3\pi$$ km

• $$6\pi$$ km

• $$2\pi$$ km

​Take notes while watching this video. You will submit a picture of your notes, once you are done with this assignment.

Multiple Select

Which of the following formulas calculates the arc length of a circle? (Select ALL that apply.)

• $$\frac{\theta}{180}\times2\pi r$$

• $$\frac{\theta}{360}\times2\pi r$$

• $$\frac{\theta}{360}\times\pi d$$

• $$\frac{\theta}{360}\times\pi r^2$$

Multiple Choice

Find the arc length of the circle. (Leave answers in terms of $$\pi$$ . Do not round your answer.)

• $$27\pi$$ km

• $$\frac{\pi}{18}$$ km

• $$15\pi$$ km

• $$\frac{45\pi}{2}$$ km

Multiple Choice

Find the arc length of the circle. (Leave answers in terms of $$\pi$$ . Do not round your answer.)

• $$27\pi$$ km

• $$\frac{\pi}{18}$$ km

• $$15\pi$$ km

• $$\frac{15\pi}{2}$$

Multiple Choice

Find the arc length of the circle. (Round your answer to the nearest tenth.)

• 42.4 m

• 21.2 m

• 84.8 m

• 6.7 m

Match

Match the answers to the following problems.

• $$3\pi$$

• $$\frac{21\pi}{2}$$

• $$5\pi$$

• $$\frac{289\pi}{12}$$

Problem 1

Problem 4

Problem 3

Problem 2

• Problem 1

• Problem 4

• Problem 3

• Problem 2

Match

Match the answers to the following problems. (HINT: change your answer to decimal)

• 20.4

• 47.1

• 5.2

• 18.8

Problem 1

Problem 4

Problem 3

Problem 2

• Problem 1

• Problem 4

• Problem 3

• Problem 2