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Mrac [35]
3 years ago
8

Which of the following is equal to the number sentence listed below?

Mathematics
1 answer:
ddd [48]3 years ago
7 0

Answer:

The answer is B

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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?
Mashutka [201]

Answer:

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Step-by-step explanation:

The area of a circle is given as:

A = \pi r^2

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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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3 years ago
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How many different 5-digit pins are there where none of the digits are repeated?
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Order the side/angles from smallest to largest
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Answer:

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The perimeter of a rectangular pool is 304 m. if the length of the pool is 81 m, what is its width?
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304=162+2W.2W=304-162.2W=142\2=71

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1 year ago
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