Identifying the Type of Series 3 + 6 + 12 + 24 + ...
DONE
5 + 7 + 10 + 14 + ...
DONE
1 + 2 + 3 + 4 + ...
DONE ✓
2 + 4 + 2 + 4 + ...
DONE

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

2nd one in the first row is correct

21/58.

hope to be marked brainliest