Question

Four numbers are plotted on the number line below:
2
𝜋
,

2
15
,

10
,

20
.






Which number is represented by point
𝐴
?

Responses

A
2
𝜋
2 pi

B
2
15
2 square root of 15

C
10
square root of 10

D
20
square root of 20

Answer 1

Compute approximate values:
- √10 ≈ 3.16
- √20 ≈ 4.47
- 2π ≈ 6.28
- 2√15 ≈ 7.75

Point A lies between √20 and 2√15 at about 6.28, so A represents 2π.

Answer: A (2π).