Mathematics, 31.01.2020 04:53 maddyjones4172

Acertain magical substance that is used to make solid magical spheres costs $500 per cubic foot. the power of a magical sphere depends on its surface area, and a magical sphere can be sold for $40 per square foot of surface area. if you are manufacturing such a sphere, what size should you make them to maximize your profit per sphere?
r= ft

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