Earth has a radius of about 6.4*10^m. What is the approximate surface are of Earth? Use the formula for the surface area of a sphere,S= 4 pi ^2 . Oceans cover about 70% of the surface of the Earth.A bout how many squares of Earth's surface are covered by ocean water? The oceans have average depth of 3790 m. Estimate the volume of water in Earth's oceans.
To find the approximate surface area of Earth, we can use the formula for the surface area of a sphere, which is S = 4πr², where "π" is the mathematical constant pi (approximately 3.14159) and "r" is the radius of the sphere.
Given that the radius of Earth is about 6.4 x 10^6 meters (6.4 million meters), we can substitute this value into the formula:
S = 4π(6.4 x 10^6)²
= 4 x 3.14159 x (6.4 x 10^6)²
Calculating this equation will give us the approximate surface area of Earth.
Now, to calculate the percentage of Earth's surface covered by ocean water, we need to take into account that oceans cover about 70% of the surface. We can multiply the calculated surface area of Earth by 0.70 to find the surface area covered by ocean water.
Approximate surface area covered by oceans = 0.70 x (surface area of Earth)
Finally, to estimate the volume of water in Earth's oceans, we need to take the average depth of the oceans into account. Given that the oceans have an average depth of 3790 meters, we can multiply the previously calculated surface area covered by oceans by this value to find the volume:
Approximate volume of water = (surface area covered by oceans) x (average depth of oceans)
Using the above steps, you should be able to find the approximate surface area of Earth and the volume of water in Earth's oceans.
proof read
like 10^what ?
S =4 pi R R