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19 April, 00:42

4.) A parachutist jumps at night into a target that is a circle 10.5 m in diameter.

The circle is marked by flares 1.57 m apart. How many flares are there?

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  1. 19 April, 01:02
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    There are 21 flares there

    Step-by-step explanation:

    Firstly, we need to know how large the circle is

    To calculate how large the circle is, we need to know what the circumference of the circle is

    Mathematically, the circumference of a circle = pi * D

    where D is the diameter of the circle and pi = 22/7

    Thus, the circumference of the circle = 22/7 * 10.5m = 33m

    Now, to know the number of flares, we divide the circumference of the circle by the the distance between the flares

    That would be 33/1.57 = approximately 21
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