A teacher is writing an exam with 60 questions. If she has finished writing 70% of
the questions, how many questions does she
still need to write?

A) 18

B) 20

C) 30

D) 42

Can smb yk..

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

24

step-by-step explanation: