Quiz about Circles

Question 1

Select all the ratios that could represent the ratio of the circumference to the diameter of a circle.

Accepted Answer

$$\frac{37.68}{12}$$

Accepted Answer

$$\frac{22}{7}$$

Accepted Answer

$$\frac{355}{113}$$

Answer

$$\frac{49}{15}$$

Answer

$$\frac{157.5}{51.1}$$

Question 2

The relationship between the circumference and the diameter is NOT proportional.

Accepted Answer

False

Answer

True

Question 3

What the circumference of the circle, in yards, of the circle shown? Leave your answer as the exact measure in terms of pi ( $$\pi$$ ).

Accepted Answer

$$20\pi$$

Answer

$$10.5\pi$$

Answer

$$31.4\pi$$

Answer

$$62.83\pi$$

Question 4

Shane is building a circular table with a circumference of 343 inches (in.). What is the radius of the table rounded to the nearest inch? Use 3.14 for $$\pi$$ .

Accepted Answer

55 in

Answer

12 in

Answer

109 in

Answer

1077 in

Question 5

What is the area, in square inches, of the circle shown? Use $$\frac{22}{7}$$ for $$\pi$$

Accepted Answer

3850 sq in

Answer

5 sq in

Answer

70 sq in

Answer

220 sq in

Question 6

Identify the area, in terms of pi ( $$\pi$$ ), of a circle with a diameter of 10 meters?

Accepted Answer

$$\left(5\right)^2\pi$$ sq meters

Answer

$$5\pi$$ meters

Answer

$$10\pi$$ meters

Answer

$$\left(10\right)^2\pi$$ sq meters

Question 7

Lake Silver Elementary School is putting in a new merry-go-round with a diameter of 8.6 feet on the playground. Before the piece can be installed, a solid circular pad of mulch must be placed underneath which extends 3 feet beyond the edge in all directions of the merry-go-round. What is the approximate area of the mulch pad that will be placed under the merry-go-round? Use 3.14 for $$\pi$$ .

Accepted Answer

$$167.33\ ft^2$$

Answer

$$45.84\ ft^2$$

Answer

$$54.01\ ft^2$$

Answer

$$58.01\ ft^2$$

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