Area of sector = 1/2 * r^2 * x where r = radius and x = angle in radians
86 = 1/2 * r^2 * pi/4
r^2 = 2 * 86 * 4 / pi = 219
r = sqrt 219
= 14.80
A radian is defined as the angle in a unit circle that gives an arc length of one. A unit circle is a circle with a radius of exactly one that is centered at the origin. Because both radians and degrees are based on the circle, 360 degrees is equal to 2pi radians.
Answer:
1487.1 centimeters
Answer:
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Step-by-step explanation:
