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gavmur [86]
3 years ago
13

A circle has a sector with area 33 pi and a central angle of 11/6 pi radians. What is the area of a circle?

Mathematics
2 answers:
vodomira [7]3 years ago
6 0

Answer:

A_{circle}= \frac{2\pi *33 \pi}{\frac{11 \pi}{6}}= 36\pi

Then we can conclude that the area for the circle would be 36\pi

Step-by-step explanation:

For this case we know that a sector have an area of 33\pi with a central angle of x=\frac{11\pi}{6}

We know that the total area of a cricle is A= \pi r^2 and we want to find the area of the circle and we can use the following proportional rule:

A_s = \frac{x}{2\pi} A_{circle}

From the last equation we can solve for A_{circle} and we got:

A_{circle}= \frac{2\pi A_s}{x}

And replacing we got:

A_{circle}= \frac{2\pi *33 \pi}{\frac{11 \pi}{6}}= 36\pi

Then we can conclude that the area for the circle would be 36\pi

Mashutka [201]3 years ago
5 0

Answer:

36π

Step-by-step explanation:

The area of a circle is given as:

A = \pi r^2

where r = radius of the circle

The area of a sector of a circle is given as:

A_s = \frac{\alpha }{2\pi} * \pi r^2

where α = central angle in radians

Since \pi r^2 is the area of a circle, A, this implies that:

A_s = \frac{\alpha }{360}  * A

A circle has a sector with area 33 pi and a central angle of 11/6 pi radians.

Therefore, the area of the circle, A, is:

33 \pi = \frac{\frac{11 \pi}{6} }{2 \pi} * A\\\\33\pi = \frac{11}{12} * A\\\\=> A = \frac{33\pi * 12}{11}\\ \\A = \frac{396 \pi}{11} \\\\A = 36\pi

The area of the circle is 36π.

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