If the diameter of a sphere is 1 meter, then what is its surface area? Leave your answer in terms of π= 3.14
2 answers:
Surface area of a sphere = 4 pi r^2
when r = 1/2 meter ( because diameter = 2r = 1) the surface area
= 4 * 3.14 * 0.5^2 = 3.14 square meters
surface area = 4 x pi x r^2
diameter = 1 so radius = 1/2 = 0.5
4 x 3.14 x 0.5^2 = 3.14 meters^2
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