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13 September, 09:22

A single grain of sand occupies a volume of about 0.004 cubic millimeters. Based on your previous answer,

how many grains of sand are on Earth's beaches?

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Answers (2)
  1. 13 September, 12:15
    0
    2 & 23

    Explanation:

    Calculate the number of grains in two steps.

    First, calculate the volume of one grain of sand in cubic meters:

    0.0044 mm3 * =.

    Then, calculate the number of grains of sand on the beaches:

    7 * 1011 m3 * = 2 * 1023 grains.
  2. 13 September, 12:24
    0
    5 sextillion grains of sand

    Explanation:

    If the volume of a single grain of sand is 0.004 cubic millimeters, then there will be about 8 x 10^9 grains of sand in a cubic meter. If the volume of all the beaches is roughly 7 x 10^11 cubic meters then there will be 5 sextillion grains of sand on all earth beaches.
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