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27 November, 09:38

What is the diameter of this circle if the circumference is 30pi inches

A. 15 in

B. 30in

C. 45in

D. 60in

+4
Answers (2)
  1. 27 November, 11:16
    0
    B. 30 inches

    Reason:

    The radius of the circle would be 15pi because 30pi divided by 2 would be 15pi (the formula for circumference is 2 x pi x radius). Diameter would be 2x the radius, so 15pi x 2 = diameter = 30
  2. 27 November, 13:29
    0
    Step-by-step explanation:

    Circumference = π*diameter

    30π=π*diameter

    Diameter=30π:π

    Diameter=30in
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