Question

If 2579 kJ of energy reaches a square meter (m2) of the United States in one hour, how much total solar energy reaches the entire United States per hour? The entire area of the United States is 9,158,960 km2.

Answer 1

2579 kJ/m^2 x (1000m/1 km) x 1000m/1 km) = ? kJ/km^2

2,579,000,000 km^2 x total area = ? kJ