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siddy20

  • one year ago

Find the circumference of 2 inches.

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  1. kirbykirby
    • one year ago
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    Is this for a circle with radius 2 inches, or diameter 2 inches?

  2. kirbykirby
    • one year ago
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    Then the formula for a circumference of a circle is \[\pi*d=\pi*2=2\pi\] where d = diameter, and that's just pi

  3. kirbykirby
    • one year ago
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    or more specifically, \[2\pi\] inches to keep the units

  4. siddy20
    • one year ago
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    Just find the area please.

  5. kirbykirby
    • one year ago
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    Yes there is: The formula for area is \[2\pi*r^2\] where r = radius Now you need to know that diameter = 2*radius So d = 2r Since d = 2 2 = 2r r = 1 So the area is \[2\pi*r^2=2\pi(1)^2=2\pi \] in inches^2 as units

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