How to find the area and circumference of a circle

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  • Опубліковано 21 сер 2024
  • Here we look at how to find the area and circumference of a circle.

КОМЕНТАРІ • 3

  • @hey.nasiri
    @hey.nasiri 5 місяців тому

    Great job explaining this topic so clearly! 👏🏼

  • @sarvajagannadhareddy1238
    @sarvajagannadhareddy1238 4 місяці тому

    HOW TO FIND THE EXACT EXACT EXACT CIRCUMFERENCE OF CIRCLE.
    Procedure
    Step 1. Draw a square, 2 diagonals and inscribe a circle in the square. Thereby side and diameter will be the same Step 2 : Subtract 2 diagonals from the perimeter of square Step3. Divide step2 with 8 Step4. Add 3 times of the side. to Step 3
    At the end we get the EXACT circumference of the inscribed circle

    • @JessaOnPointMath
      @JessaOnPointMath  4 місяці тому

      Hi- I’m not sure where you found this trick but it is not correct. In step 1, you have the diameter and side of a square being equal length. This is false. The diagonal of a square is never equal to the side length. It is the square root of 2 times the side length (always- see this video: ua-cam.com/video/ju4_3-oc8Vk/v-deo.html).
      Also pi is actually defined by the relationship between the circumference and the diameter. So the circumference is equal to pi times the diameter (or pi*2*r if you prefer to use the radius). Meaning, if you cut a string the length of the diameter and used it to measure around the circumference it would take ~3.14 times the length of the string to measure around.
      I hope that helps!