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## gabbyalicorn one year ago What is the circumference of a circle with a radius of 1.4 m?

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1. gabbyalicorn
2. gabbyalicorn

I'm guessing 2 x 3.14 x 1.4 ?

3. Michele_Laino

yes! what do you get?

4. gabbyalicorn

8.792

5. Michele_Laino

here we have to apply this formula: $C = 2 \times \pi \times 1.4 = ...inches$

6. gabbyalicorn

I still have 8.792

7. Michele_Laino

no, please we have to do this computation: $C = 2 \times \pi \times 1.4 = 2 \times 1.4\pi = 2.8 \times \pi \;inches$

8. Michele_Laino

oops.. $C = 2 \times \pi \times 1.4 = 2 \times 1.4\pi = 2.8 \times \pi \;meters$

9. gabbyalicorn

C= 8.792=8.792 = 8.792

10. Michele_Laino

here you have to multiply 2*1.4 only, so our answer is: $C = 2 \times \pi \times 1.4 = 2 \times 1.4\pi = 2.8 \times \pi \;meters$ and we have finished

11. Michele_Laino

$C = 2.8 \times \pi \;meters$

12. gabbyalicorn

2.8 x pi meters = 8.792 :I

13. Michele_Laino

you don't have to multiply 2.8*3.14

14. gabbyalicorn

okay, without pi it would be 2.8 which would be D ;D

15. gabbyalicorn

Thank you!

16. Michele_Laino

that's right! :)

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