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5 September, 21:52

a mini dvd has a radius of 4 centimeters. there is a hole in the middle of the mini dvd with a radius of 1 centimeter. what is the area of one side of the mini dvd

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  1. 5 September, 22:34
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    Area of one side of mini DVD = 15π or 47.12 cm²

    Step-by-step explanation:

    The radius of the mini DVD is; r = 4cm.

    Area of a circle = πr²

    Thus, Area of mini DVD = π * 4² = 16π

    Now, we are told the mini DVD has a hole with a radius of 1 cm.

    Area of hole = π * 1² = π

    To find the area of one side of the mini DVD, we have to subtract the area of the hole from the area of the DVD.

    Thus;

    Area of one side of mini DVD = 16π - π

    = 15π = 47.12 cm²
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