What fractional amount of the earth’s surface is covered by oceans or glaciers if 2/3 is covered by oceans and 1/10 by glaciers?

don’t know where to start? but how?

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

answer: true

step-by-step explanation: