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Geometry question
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krusta80
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As far as I know, the "length" of a circle would either be the diameter or the circumference? Did you paraphrase this question?jzw wrote:What is the length of a circle with a radius of 100? Please show how to do. I would have thought to take circumference of the circle and divide by 4?
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shashank.ism
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What do you mean by "length of a circle".. Do such term exist ??
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shashank.ism
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I think question would be length of circumference .. 
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jzw
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In the actual question it says "a fence in the shape of a quarter circle"...."what is the length of the entire fence".
We've got two radii at 100 ft each, and then the arc that connects the two radii together to form the quarter of a circle.
We've got two radii at 100 ft each, and then the arc that connects the two radii together to form the quarter of a circle.
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krusta80
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Ah ok...well assuming they mean just the quarter of the arc of a circle, it's circumference/4 = 2*pi*r/4 = 50*pijzw wrote:In the actual question it says "a fence in the shape of a quarter circle"...."what is the length of the entire fence".
We've got two radii at 100 ft each, and then the arc that connects the two radii together to form the quarter of a circle.
If we also include the radii (aka straight edges), then the answer is 50*pi + 200
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jzw
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Indeed - the correct answer is 357; (50pi)+200=357.
Maybe it was the late hour that was getting me. Diameter is 200 so circumference is 200pi, 1/4 of that is 50pi, add that to each of the 100 and we get 357. As I look @ it now it seems like an easier question. Thanks!
Maybe it was the late hour that was getting me. Diameter is 200 so circumference is 200pi, 1/4 of that is 50pi, add that to each of the 100 and we get 357. As I look @ it now it seems like an easier question. Thanks!
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krusta80
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No problem...nothing like a lack of sleep to make those pictures start moving around in your head. Trust me I've been there too.jzw wrote:Indeed - the correct answer is 357; (50pi)+200=357.
Maybe it was the late hour that was getting me. Diameter is 200 so circumference is 200pi, 1/4 of that is 50pi, add that to each of the 100 and we get 357. As I look @ it now it seems like an easier question. Thanks!
