12.56 because you multiply the radius by 2 then multiply that by 3.14
It leads all European countries in industrial output.
Answer:
0.37s to 2d.p
Explanation:
period T = no of oscillation/time taken
- no of oscillation is 59
- time taken=2×60+40= 120s + 40s=160s
T=59/160
T=0.37 to 2d.p
