Question

What is the approximate circumference of the circle?
A.1.57 m
B.157 m
C.314 m
D.3.14 m

Answer 1

\(\sf Circumference = 2 \pi r\)

r in your diagram is .5.
And \(\sf \pi = 3.14\)

Plug it in and solve.

Answer 2

1.57

Answer 3

what do you guys think?

Answer 4

2pi r = 2(3.14) (0.5)

Answer 5

Plug that into a calculator.

Answer 6

1.57?

Answer 7

No. Did you plug it into a calculator.

Answer 8

yeah

Answer 9

To make it easier, perhaps you won't need a calculator, 0.5 is also equal to dividing by 2. Therefore you can write the equation as

Answer 10

\[2\pi/2 \]

Answer 11

The 2's cross out and you are left with?

Answer 12

3.14

Answer 13

Yes.

Answer 14

Good job at explaining it @NathanJHW :)

Answer 15

so its D

Answer 16

Exactly.

Answer 17

Thanks @NathanJHW

Answer 18

You're welcome.