Question

Approximately 71% of the Earth’s surface is water. The total surface area of the Earth is approximately 5.1 x 1014 m2. How many square meters of the Earth’s surface is not water?

Answer 1

To calculate the Earth's surface area not covered by water, we subtract the percentage of the surface that is water (71%) from 100% to find the land percentage (29%), and multiply it by the Earth's total surface area, leading to approximately 1.479 x 10^14 square meters of land.

Step-by-step explanation:

Given that 71% of the Earth's surface is water, we can calculate the percentage of the Earth's surface that is not water by subtracting 71% from 100%, which is 29%. The total surface area of the Earth is approximately 5.1 x 1014 m2.

To find the area not covered by water, we multiply the total surface area by the percentage that is not water:

Surface area not covered by water = Total surface area x (1 - Percentage of surface as water)

= 5.1 x 1014 m2 x (1 - 0.71)

= 5.1 x 1014 m2 x 0.29

= 1.479 x 1014 m2

Therefore, approximately 1.479 x 1014 square meters of the Earth's surface is not water.

Answer 2

1.5 × 10^14 m²

Step-by-step explanation:

71% of the surface is covered with water.

The total surface of the Earth is 100% of the surface.

100% - 71% = 29%

29% of the surface is not covered with water.

29% of 5.1 × 10^14 m² =

= 0.29 × 5.1 × 10^14 m²

= 1.479 × 10^14 m²

= 1.5 × 10^14 m²