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11 August, 14:12

What is the approximate diameter of an inflated

basketball?

(1) 2 * 10^-2 m (3) 2 * 10^0 m

(2) 2 * 10^-1 m (4) 2 * 10^1 m

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Answers (1)
  1. 11 August, 14:58
    0
    Well let's convert all these values out of standard form first:

    2x10^-2 = 2x0.01 = 0.02m = 2cm

    2x10^0m = 2x1 = 2m

    2x10^-1m = 2x0.1 = 0.2m = 20cm

    2x10^1m = 2x10 = 20m

    Based on that, we know that 20cm is roughly equivalent to a basketball (at least it's closer than all the other values), so the answer is therefore 2 - 2x10^-1m
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