Answer:
Radius=141.72 Diameter=283.44
Explanation:
Use c=2pir to find the radius. So your c is 148 and your pi is 3.14. (148=2(3.14)(r)). distribute. (148=6.28r) Get r by itself so subtract 6.28. (141.72=r). That is your radius. To find you diameter multiply your radius (141.72) by 2. d=283.44.
Hope this helped!