Quiz about Area Circumference Sector Arc Length

Question 1

Find the area of the sector. Round to the nearest tenth.

Accepted Answer

11.3 cm2

Answer

8.9 cm2

Answer

9.0 cm2

Answer

11.4 cm2

Question 2

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

Accepted Answer

$$4\pi$$ m

Answer

$$1\pi$$ m

Answer

$$2\pi$$ m

Question 3

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

Accepted Answer

$$6\pi$$ km

Answer

$$3\pi$$ km

Answer

$$2\pi$$ km

Question 4

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

Accepted Answer

$$15\pi$$ km

Answer

$$27\pi$$ km

Answer

$$\frac{\pi}{18}$$ km

Answer

$$\frac{15\pi}{2}$$

Question 5

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

Accepted Answer

$$\frac{45\pi}{2}$$ km

Answer

$$27\pi$$ km

Answer

$$\frac{\pi}{18}$$ km

Answer

$$15\pi$$ km

Question 6

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

Accepted Answer

42.4 m

Answer

21.2 m

Answer

84.8 m

Answer

6.7 m

Question 7

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

Accepted Answer

$$C=2\pi r$$

Accepted Answer

$$C=\pi d$$

Answer

$$C=\pi r^2$$

Answer

$$A\ =\ \pi r^2$$

Question 8

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

Accepted Answer

$$12\pi$$ yd

Answer

$$3\pi$$ yd

Answer

$$6\pi$$ yd

Question 9

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

Accepted Answer

$$\frac{ heta}{360} imes2\pi r$$

Accepted Answer

$$\frac{ heta}{360} imes\pi d$$

Answer

$$\frac{ heta}{180} imes2\pi r$$

Answer

$$\frac{ heta}{360} imes\pi r^2$$

Question 10

What is this called?

Accepted Answer

Circumference

Answer

Chord

Answer

Minor Arc

Answer

Secant

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