Pero had $14.90 in his wallet. he spent $1.25 on drink. how much does he have left? (a) estimate the answer by rounding to the nearest whole numbers before subracting. (b) will your estimate be high or low? explain. (c) find the difference. show your work.

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