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3 years ago

5

What is the arc length of the subtending arc for an angle of 72 degrees on a circle of radius 4?

1 answer:

shepuryov [24]3 years ago

3 0

First, determine the circumference (C) of the circle, the equation,
C = 2πr
Substituting the value or the radius,
C = 2π ( 4) = 8π
The arc length is the product of the circumference and the ratio between the subtended angle and 360. The mathematical expression is already,
S = (8π) x (72 / 360) = 0.8π
Thus, the arc is 0.80π.

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