Calculate the exact value of the area of a sphere when the diameter of the sphere is

a) 2.0 m.

Answer: The exact area of the sphere is π m[[$ ^2 $]].

b) 4.0 m.

Answer: The exact area of the sphere is π m[[$ ^2 $]].

c) 9.0 m.

Answer: The exact area of the sphere is π m[[$ ^2 $]].

d) 10.0 m.

Answer: The exact area of the sphere is m[[$ ^2 $]].

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