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16 September, 16:33

What is the area of a semi circle w pi being 3.142 and a diameter of 19cm

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  1. 16 September, 16:47
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    Step-by-step explanation:

    Area of circle is A = pi * r ^2=283.38

    while area of semi cirlce is half of total 283.385/2 = 141.69
  2. 16 September, 17:00
    0
    Step-by-step explanation:

    Area of semi circle is = pie * r^2 / 2

    And d=2r or r = d/2

    So r = 19/2

    Thus area of semi circle is = 3.142*19*19/2*2*2 = = 141.78 sq. cm
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