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ch4aika [34]
3 years ago
6

A circle has a radius of 5 inches (What is the measure, in radians, of this central angle?

Mathematics
1 answer:
Anastaziya [24]3 years ago
3 0

Answer:

Step-by-step explanation:

Given

Circle has radius r=5 in.

Area of the sector is given by

A_s=\frac{\theta }{2\pi }\times \pi r^2

if A_s is one-sixth  of area of circle then

A_s=\frac{\pi r^2}{6}

\frac{\pi r^2}{6}=\frac{\theta }{2\pi }\times \pi r^2

\theta =\frac{2\pi }{6}=\frac{\pi }{3}\ radian

If A_s is one-fourth of area of circle then

A_s=\frac{\pi r^2}{4}

\theta =\frac{2\pi }{4}

\theta =\frac{\pi }{2}

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