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Pi 31 Not this pie.

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Presentation on theme: "Pi 31 Not this pie."— Presentation transcript:

1 pi 31 Not this pie

2 What is pi ???? Pi is a way of finding out the area inside a circle or a sphere if you use a different formula Pi has infinite numbers or as far as we know it does not repeat or end to find a use for pie use these 2 formulas if its either a circle or sphere to find the area of them To make area of a circle is circumference x diameter = pi ÷ radius = area of circle To make area of a sphere it is 4 x pi x radius to the 2nd power = area of a sphere

3 Circles (my favorite color)
You probably heard some very unfamiliar words back there here is what they means Circumference- perimeter or distance around a circle (the lines you see) diameter- straight line trough the circle Radius- half of the diameter

4 The formula The perimeter of ANY circle divide by the diameter of THE SAME circle will ALWAYS equal pi!!!! so as it says above if I take a circle and divide it by its diameter what will it equal? So now you have to answer this question: (remember radius x pi + area of the circle) if the diameter of a circle is 20 what is the area

5 Now we eat pie!!!


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