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? asked in Science & MathematicsMathematics · 1 month ago

Please help?

A circle has a diameter of 396mm and an arc length of 88𝜋 mm.

What is the angle measure of the arc?

2 Answers

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  • ?
    Lv 7
    1 month ago

    A circle has a diameter of 396 mm and an arc length of 88π mm.

    396 π mm = circumference of the circle.

    88 π mm = arc of 2/9 circumference 

    The angle measure of the arc is 80 degrees.

  • 2 * pi * 396/2 = 396 * pi

    88pi / (396 * pi) = T / 360

    360 * 8 * 11 / (4 * 99) = T

    360 * 2 / 9 = T

    40 * 2 = T

    80 = T

    The angle is 80 degrees

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