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31 March, 00:51

9. Which of the following do you need to know to determine the surface area and volume of a sphere?

A. The radius of the sphere

B. The eccentricity of the sphere

C. The circumference of a great circle on the sphere

D. The radius and eccentricity of the sphere

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  1. 31 March, 01:18
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    A: radius of the sphere

    Step-by-step explanation:

    The formula for surface area is A = 4πr^2

    With r being the radius and A the surface area.

    For volume it is

    V = (4/3) πr^3
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