If a = 11 feet, b = 7 feet, c = 1 foot, d = 16 feet, and e = 2 feet, what is the area of the object?
a. 75.5 square feet
b. 134.5 square feet
c. 100.5 square feet
d. 90.5 square feet

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