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20 March, 14:20

A leather ball has a diameter of 28.4 cm. Which is the area of the piece of leather used on the surface of the ball?

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  1. 20 March, 16:37
    0
    has the same diameter as the sphere, and height equal to its diameter ... The surfce area of a soccer ball is 250 square inches ... An official basketball has a radius of 12.5 cm and ... much leather is required to cover 12 official.
  2. 20 March, 17:28
    0
    2534 cm^2 to the nearest whole number.

    Step-by-step explanation:

    The ball is a sphere whose surface are is 4 pi r^2

    The radius r = 1/2 diameter = 1/2 * 28.4

    = 14.2 cm.

    The required area = 4 * pi * 14.2^2

    = 2533.88 cm^2
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