Posted: 4/2/2014 4:37:44 PM EDT
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Okay I know two ways for finding the area of a circle
Pi X radius, squared and Diameter squared X 0.07854 I know where Pi comes from but what does 0.07854 come from and does it have a name? |
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I'll say it was either Common Core or missed the decimal point. Quoted:
Quoted:
Pi/4 equals .7854. Not sure where you picked up the zero though. fortunately I am old enough to have missed common core |
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Quoted:
Pi/4 equals .7854. Not sure where you picked up the zero though. Yup. Should be 0.78539. There is no name for it as it is just pi/4. It comes from the fact that you are doubling the radius first (ie using the diameter) then squaring it. 2 x 2 = 4. Therefore you must divide pi by 4 giving you 0.78539. |
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Quoted: Yup. Should be 0.78539. There is no name for it as it is just pi/4. It comes from the fact that you are doubling the radius first (ie using the diameter) then squaring it. 2 x 2 = 4. Therefore you must divide pi by 4 giving you 0.78539. Quoted: Quoted: Pi/4 equals .7854. Not sure where you picked up the zero though. Yup. Should be 0.78539. There is no name for it as it is just pi/4. It comes from the fact that you are doubling the radius first (ie using the diameter) then squaring it. 2 x 2 = 4. Therefore you must divide pi by 4 giving you 0.78539.  |
