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11 January, 04:31

The radius of the inner circle is 2 cm and the radius of the outer circle is 6 cm. Find the area of the shaded portion of the circle in cm2. Leave answer in terms of pi.

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  1. 11 January, 04:37
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    32π cm²

    Step-by-step explanation:

    Area of a circle is given by πr²

    Where r is the radius.

    For this case, let outer radius be R while inner radius r hence the area, A is given by;

    Shaded area will be

    A=π (R²-r²)

    Substituting 6cm for R and 2 cm for r then

    A=π (6²-2²) = π (36 cm²-4 cm²) = 32π cm²

    Therefore, the area is 32π cm²
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