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Math Help - Basic problem.

  1. #1
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    Basic problem.

    <br /> <br />
A = \pi \cdot \left(\frac{x}{2\pi}\right)^2 = \frac{x^2}{4\pi}<br />

    Can someone tell me the steps for this? I don't get how pi(x/2pi)^2 = x^2/4pi
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  2. #2
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    Quote Originally Posted by kmjt View Post
    <br /> <br />
A = \pi \cdot \left(\frac{x}{2\pi}\right)^2 = \frac{x^2}{4\pi}<br />

    Can someone tell me the steps for this? I don't get how pi(x/2pi)^2 = x^2/4pi
    I believe this is the way to think about problem, but truthfully am not 100% sure -- Check it out. . . .

    1. pi = pi/1

    2. (x/2pi)^2 = (x^2)(pi)/(4pi^2)

    3. pi x (x^2) = (x^2)pi/4pi^2) = x^2/4pi
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  3. #3
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    Anyone else?
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  4. #4
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    Ignore Previous Post

    Pretty sure I am wrong. What I entered came out all wrong. Am new member. Must learn how to use MathType to make things clear!
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  5. #5
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    Not a problem thanks for trying I have simplfied it myself and got it right.
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  6. #6
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    Red face

    Quote Originally Posted by kmjt View Post
    <br /> <br />
A = \pi \cdot \left(\frac{x}{2\pi}\right)^2 = \frac{x^2}{4\pi}<br />

    Can someone tell me the steps for this? I don't get how pi(x/2pi)^2 = x^2/4pi
    kmjt --

    I was too tired and in too big of a hurry last night when I replied to your question. Sorry.

    I should have just said to do the squaring of the terms in parenthesis, and then divide through by pi --

    (x divided by 2pi) squared = x squared divided by 4pi squared. Dividing then by pi results in x squared divided by 4pi.
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