3 years ago

Please help! #6 Confused

Mathematics

1 answer:

Karo-lina-s [1.5K]3 years ago

3 0

Answer:

need the diagram

Step-by-step explanation:

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the area of a circle is 81 pi m^2. what is the circumference, in meters? express your answer in terms of pi.

mestny [16]

<h3>Answer: 18pi</h3>

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Explanation:

The area 81pi square meters leads to the radius 9 meters

Use the formula A = pi*r^2 to see why this is the case. You plug in A = 81pi and solve for r to get r = 9.

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Once you know the radius, you can determine the circumference C

C = 2*pi*r

C = 2*pi*9

C = 2*9*pi

C = 18pi

The circumference is the perimeter, or distance, around the circle.

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rjkz [21]

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labwork [276]

26% of 50
26/100 * 50
13

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Jobisdone [24]

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remember some rules

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$x^{-a}=\frac{1}{x^a}$

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$\frac{(7^{-3-2})(2^0)}{(7^{-1-4})(2^3)}=$

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$(\frac{7^{-5}}{7^{-5}})(\frac{2^0}{2^3})=$

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3 years ago

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salantis [7]

Answer:

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8+6n< -42

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