Asked by Michelle
A cross-section of a sphere, which is 6 units from the center of the sphere, has a circumference of 8π units. Find the surface area of the sphere.
Answers
Answered by
Steve
draw a side view.
r^2 = 6^2 + 4^2
A = 4pi r^2
r^2 = 6^2 + 4^2
A = 4pi r^2
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