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Because the ratio of the circumference to the diameter of every circle is pi. So circumference = pi*diameter.

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12y ago

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How do you calculate circumference and area of pi?

Pi is the number of times the diameter of a circle will fit into the circumference. Pi is not a circle, and does not have a circumference or area. To calculate a circumference USING pi, the circumference is diameter * pi. To find the area using pi, area = pi * radius * radius


How do you calculate circumference of a circle using fractions as pi?

Pi is 22/7. Therefore, the equation for finding the circumference of a circle using fractions is: 22/7 mutiplied by the diameter of the circle :)


How do you calculate the circumference of a circle using the radius?

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Pi can be used to calculate the blank of a circle?

Pi can be used to calculate the area of a circle Pi can be used to calculate the circumference of a circle


How do you calculate pi using divisibility?

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How can you measure circumference?

The circumference of a circle can be measured by using the formula: C = 2πr, where C is the circumference and r is the radius of the circle. Simply multiply 2 times π (approx. 3.14) by the radius of the circle to calculate the circumference.


How do you calculate the circumfrerence of a circle?

Circumference of a circle = 2*pi*radius or pi*diameter


What do pi have to do with math?

you use pi to calculate the area or circumference of a circle


How can you calculate the length of the circumference of a circle with diameter 9.2 cm?

To calculate the circumference of a circle, you can use the formula ( C = \pi d ), where ( d ) is the diameter. Given a diameter of 9.2 cm, substitute this value into the formula: ( C = \pi \times 9.2 ). Using ( \pi ) approximately as 3.14, the circumference is about ( 28.9 ) cm. Thus, the circumference of the circle is approximately 28.9 cm.


How do you calculate the area of a circle if you know the circumference?

By dividing its circumference by 2*pi will give the radius of the circle and its area = pi*radius2


How do you calculate the perimeter of a circle?

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Why do we use pi?

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