7th grade math help?
A larger circle has a circumference of one-third of that. Find the radius of the smaller circle.
^ THATS WRONG THIS IS THE QUESTION::
A larger circle has a circumference of 30(3.14). A smaller circle has a circumference of one-third of that. Find the radius of the smaller circle.
- MichaelLv 74 weeks ago
circumference of smaller circle
c = (1/3) * 30(3.14)
c = 10(3.14)
c = 2(3.14)r
2(3.14)r = 10(3.14)
Divide both sides by 3.14
2r = 10
Divide both sides by 2
r = 5 <––––––
- Anonymous4 weeks ago
This question makes no sense, how are we meant to find a radius without any given measurement on the larger circle.
- llafferLv 74 weeks ago
I think you're missing info. Like what's the radius of the larger.
If the larger's circumference is 3x the circumference of the smaller, then the radius would also be 3x the size (or the radius of the smaller is 1/3 that of the larger).
EDIT: What I said above is still true. Use that information and you can solve the problem.