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23 August, 12:10

How much plastics will be needed to cover a beach ball with a radius of 20 inches

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  1. 23 August, 15:58
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    5,024 in²

    Step-by-step explanation:

    recall that the surface area of a sphere is given by

    A = 4πr²

    where r = radius = given as 20 inches

    hence,

    A = 4πr² (assume π = 3.14)

    = 4 x 3.14 x (20) ²

    = 5,024 in²
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