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28 March, 14:52

What is the surface of a sphere with a radius of 9 units

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  1. 28 March, 16:27
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    1018 units^2

    Step-by-step explanation:

    The surface area of a sphere is given by A = 4pi (r) ^2, where r is the radius.

    Here, A = 4 (3.14159) (9 units) ^2 = 1018 units^2, to the nearest integer.
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