Calculate the center angle a if the lenght of the circular arc 31,4cm and the radius of the circle 9cm​

Question

Calculate the center angle a if the lenght of the circular arc 31,4cm and the radius of the circle 9cm​

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1 month 2021-11-08T16:56:33+00:00 2 Answers 0 views 0

Answers ( )

  1. Emma
    0
    2021-11-08T16:57:35+00:00

    Answer:

    3.49 radians

    Step-by-step explanation:

    The arc length formula is s = rФ, where r is the radius and Ф is the central angle.  We know s and r and need to calculate Ф.

    From s = rФ we get Ф = central angle = s/r

    Here, that central angle Ф is (31.4 cm) / 9 cm = 3.49 radians

  2. Emma
    0
    2021-11-08T16:57:42+00:00

    Answer:

    3.48 radian

    Step-by-step explanation:

    length of arc= radius * center angle

    31.4 = 9 * angle

    angle is in radian

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45:7+7-4:2-5:5*4+35:2 =? ( )