## anonymous one year ago Find the exact circumference of a circle with the given radius. 3½ cm C = 7.5π cm 7π cm 6.25π cm

1. freckles

$C=2 \pi * r$ you are given r is 3.5 just replace r with 3.5

2. freckles

and then do the indicated operation in the problem

3. anonymous

indicated operation? @freckles

4. freckles

2*r *pi * means multiply the operation is multiplication

5. freckles

2*r is the same thing as r+r if you don't like multiplication

6. freckles

$C=\pi \cdot 2r \text{ or } C=\pi \cdot (r+r)$

7. freckles

do you know how to do 2*3.5 or 3.5+3.5?

8. anonymous

yes lol so it was just 3,5*2 the whole time? @freckles

9. freckles

well times pi

10. freckles

which you will just leave as times pi

11. freckles

since it said exact

12. anonymous

ok thnx

13. freckles

np