Answer:
1. 12.6 2. 21.4
Step-by-step explanation:
1. c=2piR, so if the radius is 2, then 2 times 2 then times 3.14= 12.6(rounding to the nearest tenth)
2.i already explained the formula, so it should be 3.4*2 then times 3.14= 21.4
