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Find the circumference of a circle with an area of 530.93 square meters round to the nearest hundred

User Nate Pet
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2 Answers

3 votes

Answer:

81.68

Explanation:

the other guy's last decimal is wrong.

User Sherif Eldeeb
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8.8k points
3 votes

Answer:

81.6 meters

Explanation:

We know the area of the circle is 530.93 square meters. We use the formula for the area of a circle to find r using inverse operations.


A=\pi r^(2) \\530.93=\pi r^(2) \\(530.93)/(\pi ) =(\pi r^(2) )/(\pi ) \\169.0859=r^(2) \\√(169.0859)=r\\ 13=r

We now know the radius. We can substitute it into the circumference formula to find its value.


C=2\pi r\\C=2\pi (13)\\C=81.64


User Teiem
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7.7k points

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