47.4k views
0 votes
earth's radius is approximately 4000 mi. about two thirds of the Earth's surface is covered by water. estimate the land area on earth

1 Answer

2 votes

9514 1404 393

Answer:

67 million square miles

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.

User Bens
by
8.2k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories