Answer plz. Give an explanation so I know ur not just getting points so I dont report. Thank you!

C

Step-by-step explanation:

Hey There!

The answer is C because x would equal what 42% of 12 would be if that makes sense

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

4

step-by-step explanation: