## gabbyalicorn one year ago Bill measures the circumference of a circular fish pond to be 28 ft. What is the diameter of the fish pond, rounded to the nearest foot? Use 3.14 to approximate pi. So, 3.14 x 28 x 2 / 2 ? am i right on how i am doing this?

1. tkhunny

You already know the circumference. There should be some division in there in order to find the diameter or the radius.

2. gabbyalicorn

yes, after i get the answer which would be 175.84 then i would divide it by 2 which would be 87.92

3. gabbyalicorn

@tkhunny

4. gabbyalicorn

am i right?

5. Michele_Laino

hint: If C is the measure of the circumference, and D is the measure of the diameter, then we can write this: $\Large C = 3.14 \times D$ so we have: $\Large D = \frac{C}{{3.14}} = \frac{{28}}{{3.14}} = ...feet$

6. tkhunny

You didn't listen. Why would the diameter be greater than the circumference. Circumference = 2 * Radius * pi Circumference = Diameter * pi Rethink!

7. gabbyalicorn

brb for a sec

8. gabbyalicorn

okay, back

9. gabbyalicorn

3.14 / 28 ?

10. Michele_Laino

no, please look at formulas of @tkhunny, or at my formulas above

11. gabbyalicorn

i did

12. Michele_Laino

we have: $\Large D = \frac{C}{{3.14}} = \frac{{28}}{{3.14}} = ...feet$

13. gabbyalicorn

yes, |dw:1433357017617:dw|

14. Michele_Laino

yes! that's right!

15. gabbyalicorn

but i did say that "3.14 / 28 ?"

16. Michele_Laino

no, it is 28/3.14=...?

17. gabbyalicorn

8.9171974522....

18. Michele_Laino

ok!

19. Michele_Laino

20. gabbyalicorn

8.9171974522....?

21. Michele_Laino

you have to round off that value to the nearest foot

22. gabbyalicorn

8.917?

23. Michele_Laino

I think 9

24. gabbyalicorn

oh beacuse you rounded

25. Michele_Laino

yes! I have rounded to the nearest foot

26. gabbyalicorn

√ Okay, Thank you for your help!

27. Michele_Laino

:)