If the ocean covers an area of 71% of the Earth, what is the total surface area in kilometers squared??
510.1 million km² = total surface of the earth.
Multiply it by 0.71
To calculate the total surface area of the Earth in square kilometers, we need to know the total surface area and then multiply it by the percentage covered by the ocean.
First, let's find the total surface area of the Earth. The Earth is approximately a sphere, so we can use the formula for the surface area of a sphere:
Surface Area of a Sphere = 4πr^2
Where r is the radius of the Earth.
The average radius of the Earth is about 6,371 kilometers (km). So, substituting this value into the formula:
Surface Area of the Earth = 4π * (6,371 km)^2
Surface Area of the Earth = 4π * 40,371,441 km^2 (rounded to the nearest whole number)
Surface Area of the Earth ≈ 510,072,000 km^2 (rounded to the nearest whole number)
Now, let's calculate the area covered by the ocean by multiplying the total surface area of the Earth by the ocean coverage percentage:
Ocean Area = 510,072,000 km^2 * 0.71
Ocean Area ≈ 362,880,120 km^2 (rounded to the nearest whole number)
Therefore, the approximate total surface area of the Earth in square kilometers is approximately 510,072,000 km^2, and the area covered by the ocean is approximately 362,880,120 km^2.