# algebra

posted by Anonymous

The area of a circle is 78.5 square centimeters, and a subtending arc on the circle has an arc length of 6pi. The estimated value of is 3.14.
what is the measure of the angle subtended by the arc in degrees?

1. Steve

since a=πr^2 = 78.5 = 25π, r=5
since s=rθ = 6π, θ = 6π/5 = 216°

2. Anonymous

11

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