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13 April, 11:23

An engineer is planning a new water pipe installation. The circular pipe has a diameter of d=20 cm.

What is the area A of the circular cross section of this pipe?

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  1. 13 April, 11:31
    0
    314.29

    Step-by-step explanation:

    Area of circular cross-section is area of the circle with diameter, d = 20; r = 20 / 2 = 10

    Area = pi * r^2

    = 22 / 7 *. (10 * 10) = 22 * 100 / 7 = 2200 / 7 = 314.29
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