A sector of a circle has a central angle of 80 degrees. If the area of the sector is 35pi, what is the radius of the circle?
What is the radius of the circle?
Hello Guest!
\(A=\pi r^2\cdot \frac{80°}{360°}\\ 35\pi =\pi r^2\cdot \frac{80°}{360°}\\ r=\sqrt{\frac{35\cdot 360}{80}}\)
\(r=12.55\)
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