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Homework Statement
The formula for the surface area of a sphere is 4(3.14) r2, where r is the mean distance from the sun to the earth. Determine the sphere of light (square meters) illuminated by the sun the size of the Earth's orbit.
Homework Equations
astronomical Unit-149,597,829 k
The Attempt at a Solution
my answer is 2.8122922(17)
no idea
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