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anonymous

  • 5 years ago

Does anyone know an algebraic expression that gives the area of a circle with a circumference ?

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  1. anonymous
    • 5 years ago
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    circumfrance = pi * d

  2. anonymous
    • 5 years ago
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    area = p * r^2

  3. anonymous
    • 5 years ago
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    ok so A= pi*r^2*d ?

  4. anonymous
    • 5 years ago
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    no i dont' think that there is one for both. you have to use diff. values for each one

  5. anonymous
    • 5 years ago
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    ok thanks!

  6. amistre64
    • 5 years ago
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    Area of a circle = Circumference times r /2 C = 2pi(r) A = (2pi(r))r/2 A= pi(r^2)

  7. amistre64
    • 5 years ago
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    Actually the Area of a sector is equal to its degree in radians times the square of the radius divided by 2. The radian measure of a circle is (2pi). 2pi(r^2)/2 = pi(r^2)

  8. anonymous
    • 5 years ago
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    The question for this one says, Enter here an algebraic expression that gives the area of a circle with a circumference . Hint: The circumference of a circle with radius is , and its area is

  9. amistre64
    • 5 years ago
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    Algebraic expressions: Circumference = 2pi(r) Area = pi(r^2) When you know the radius, you can solve :)

  10. anonymous
    • 5 years ago
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    isnt the radius 1/2

  11. anonymous
    • 5 years ago
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    radius = d/2

  12. amistre64
    • 5 years ago
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    the radius depends on the size of the circle. And it is half of the width.

  13. anonymous
    • 5 years ago
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    yeah so diameter/ 2

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