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godwin_ibrahim
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Tyro
Asked: 2020-11-14T22:44:39+00:00 In:

A ball has diameter 20cm. What is the volume of the ball correct to two significant figures?

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A ball has diameter 20cm. What is the volume of the ball correct to two significant figures?

significant figures

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  2. Sengemegz
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    This answer was edited.

    The shape of the ball is a sphere
    Hence volume of sphere =\dfrac{4}{3}\Pi r^{3}
    Given r=\dfrac{d}{2}=\dfrac{20}{2}=10cm, \Pi =\dfrac{22}{7}
    volume=\dfrac{4}{3}\times \dfrac{22}{7} \times 10^{3}
    volume=\dfrac{4}{3}\times \dfrac{22}{7} \times 1000
    volume=\dfrac{88000}{21}=4190.48\approx 4190cm^{3}

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