Which of the following would not be a valid method of justifying the surface area of a sphere formula?
?
A. ?Taking apart the cover of a baseball.
B. ?Placing square units over a sphere.
C. ?Painting a sphere and determining the amount of paint used (in gallons/liters) and then converting this figure into square units.
D. ?Tessellating a sphere with shapes with known areas.
E. ?None of the above.
Answer: C
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