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This much energy flows outward from the Sun in each square meter of the surface of a sphere with a radius equal to the distance of the Earth from the Sun (1 AU, 1

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This much energy flows outward from the Sun in each square meter of the surface of a sphere with a radius equal to the distance of the Earth from the Sun (1 AU, 1.5 x 10⁸ km or 1.5 x 10¹¹ meters).  How much total energy does the Sun produce each second?                                          

1. Compute the surface area of a sphere with a radius of the Earth's orbit. The formula for the surface area of a sphere is A=4 π r².

1. Multiply the area of the sphere in square meters by the energy per square meter per second (watts per square meter) that falls on the Earth, to compute the total energy output of the Sun each second.