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28 May, 19:28

Find the circumference of circle if the area is 300 square centimeters

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Answers (2)
  1. 28 May, 22:22
    0
    Pi*r^2 = 300

    r = √ (300/pi)

    So circumference = 2*pi*r = 2√ (300pi)
  2. 28 May, 22:23
    0
    Area of circle

    πr² = 300 cm²

    r = √ (300/π)

    r = 9.77205 cm

    r ≈ 9.77cm (3s. f.)

    Circumference of circle

    = 2πr

    = 2π (9.77205)

    = 61.39960

    ≈ 61.4 cm (3s. f.)
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