earth's radius is approximately 4000 mi. about two thirds of the Earth's surface is covered by water. estimate the land area on

Question

3 years ago

7

earth

1 answer:

UkoKoshka [18] · Answer 1 · 2022-08-13T11:03:02+03:00

9514 1404 393

Answer:

67 million square miles

Step-by-step explanation:

The area of a sphere is given by ...

A = 4πr²

So the area of the Earth is approximately ...

A = 4π(4000 mi)² ≈ 2.01×10^8 mi²

The area of the 1/3 that is not covered by water is approximately ...

(2.01×10^2 mi²)/3 = 6.7×10^7 mi²

The land area is estimated to be about 67 million square miles.