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Why does pi multiplied by diameter equal the circumference of a circle?
Wiki User
∙ 15y ago
Well, I asked my math teacher and thi is what she said. Okay. A long time ago there were math mathematicians. They had circles sculpted out of rock and wood and stuff like that. So anyway, these mathematicians, or MAs would study the circles by mesuring them. The MA's would take a tape and measure all the way around a circle. They then would measure across the circle. The would do big circles and small circles. They then noticed that there was a pattern. If the mutiplied the distance across the circle times a number, they would get the circumferance. The number was, 22/7 or 3.14...and pi was born. So of course we know that the decimal isn't perfect and we won't get an exact answer when mutipling by pi. But now at least we don't have to cut a circle out of stone and use a measuring tape to determine it that way. ~Minicooper Out!
Wiki User
∙ 15y ago
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What is Circle pi relationship?
Pi ( 3.142 approx.) is the amount of times the diameter of a circle can be measured along the circumference of a circle. We know that Pi multiplied by the diameter of the circle is equal to it circumference. So we write C=PiD This means, as it says above, that a certain number of "Pi's" will be equal to the circumference.
If the diameter of the circle above is 10 meters what is the circumference of the circle?
Circumference is equal to Diameter x Pi. So the circumference is 10π
The ratio of the circumference of a circle to its diameter roughly equal to 3.141592?
Circumference (C) = diameter (D) times pi (3.141592) is the ratio of the circumference of a circle to its diameter.
What is the circumference of the circle with a 12inch diameter?
The circumference is equal to pi ( 3.14167... ) times the diameter. You do the math.
Is the diameter half of the circumference?
No. The diameter is twice the radius. The circumference is equal to the diameter multiplied by pi (3.142). So the diameter is just under 1/3 of the circumference.
What is the circumference if the diameter is 440?
If you mean a circle, the circumference is equal to the diameter multiplied by pi.
What is the diameter of a circle with a inch circumference?
The circumference is equal to the diameter multiplied by pi. Therefore, if you know the circumference, you can divide by pi to get the diameter.
Why is pi used to find the circumference of a a circle?
Because the circumference is equal to the diameter multiplied by pi or the radius multiplied by 2*pi.
The diameter of a circle is 8 feet what is the circumference?
The circumference is equal to the diameter multiplied by Pi (about 3.1416):8 feet x 3.1416 = circumference of 25.1328 feet
How can you measure circumference?
pi * diameterwhere pi = 3.14155*d
What is Circle pi relationship?
Pi ( 3.142 approx.) is the amount of times the diameter of a circle can be measured along the circumference of a circle. We know that Pi multiplied by the diameter of the circle is equal to it circumference. So we write C=PiD This means, as it says above, that a certain number of "Pi's" will be equal to the circumference.
What a relationship between pi and circle?
Pi ( 3.142 approx.) is the amount of times the diameter of a circle can be measured along the circumference of a circle. We know that Pi multiplied by the diameter of the circle is equal to it circumference. So we write C=PiD This means, as it says above, that a certain number of "Pi's" will be equal to the circumference.
What is the perimeter of a perfect circle?
The measure around a circle is called a circumference, rather than a perimeter. The term "perimeter" is used for polygons. The circumference of a circle is equal to the diameter, multiplied by pi - or to the radius, multiplied by 2 x pi. The number pi - which can be defined precisely as the ratio between the circumference and the diameter of a circle - is approximately 3.1416.
What is a irrational number equal to the circumference to the diameter of the circle?
The circumference of a circle divided by its diameter is equal to pi which is an irrational number.
How are the circumference of a circle the diameter of a circle and pi related?
The circumference of a circle divided by its diameter is equal to the value of pi.
What happens when you divide the circumference of a circle by the diameter?
The circumference of a circle divided by its diameter is equal to the value of pi
What is circumference compared with the diameter?
The circumference of a circle divided by its diameter is equal to pi.
