Quiz about Pi and Diameter of Circle

Question 1

To mathematically calculate the special number "pi" you need the __________________________.

Accepted Answer

circumference & the diameter

Answer

diameter & the radius

Answer

any two parts of the circle

Question 2

What is the best way to find pi?

Accepted Answer

C/D

Answer

3.1415...

Answer

22/7

Answer

20 x 3.1415...

Question 3

Which is just an estimate or approximation of pi?

Accepted Answer

22/7

Answer

pi

Answer

C/D

Answer

3

Question 4

Accepted Answer

$$\frac{C}{13}$$

Answer

$$\frac{C}{6.5}$$

Answer

$$\frac{6.5}{C}$$

Answer

$$\frac{13}{C}$$

Question 5

Accepted Answer

$$\frac{43.96}{14}$$

Answer

$$\frac{43.96}{7}$$

Answer

$$\frac{7}{43.96}$$

Answer

$$\frac{14}{43.96}$$

Question 6

Determine the radius of the penny

Accepted Answer

9.5 mm

Answer

59.66 mm

Answer

38 mm

Answer

119.32 mm

Question 7

If the radius of a circle is 12.5 meters, the diameter is ____

Accepted Answer

25 meters

Answer

6.25 meters

Answer

125 meters

Answer

50 meters

Question 8

If the diameter of a circle is 50 yards, the radius is _____

Accepted Answer

25 yards

Answer

100 yards

Answer

150 yards

Answer

15 yards

Question 9

One diameter will not wrap around a circle, but approximately _____________ diameters will wrap around the outside of the circle.

Accepted Answer

three

Answer

two

Answer

100

Question 10

The number pi is approximately equal to _________.

Accepted Answer

3.14

Answer

3

Answer

whatever the diameter equals

Question 11

The number pi ________________

Accepted Answer

never ends & never repeats

Answer

has only 3 digits

Answer

ends eventually
(it is just a really long number)

Question 12

The distance around the circular cake is 9.42 inches. The distance across the cake is 3 inches. What happens when you divide 9.42 by 3?

Accepted Answer

You get pi

Answer

You get the area of the circle

Answer

You get the diameter of the circle

Question 13

The only way to get exactly pi is...

Accepted Answer

circumference / diameter

Answer

3.141592...

Answer

22/7

Answer

go to a store and buy it

Answer

bake it

Question 14

diameter?

Accepted Answer

10 in

Answer

5 in

Answer

3.14 in

Answer

2.5

Question 15

Ratio of circumference to diameter is a constant and it is denoted as ____.

Accepted Answer

$$pi\left(\pi\right)$$

Answer

$$\inf inite\left(\infty\right)$$

Answer

$$alpha\left(\alpha\right)$$

Question 16

Can you say that the circumference of a circle is always more than three times its diameter?

Accepted Answer

Yes

Answer

No

Question 17

What is the circumference of the circle? (Circumference = pi x diamter)

Accepted Answer

18.84

Answer

52.56

Answer

21.25

Answer

6.28

Question 18

What is the circumference of this circle?

Accepted Answer

37.68

Answer

18.84

Answer

21.12

Answer

47.10

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