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afzaal
afzaal asks:
Q:

how can we find out the value of pi?

i want to find out the value of pi by doing activity, but how??????
In Topics: Helping my child with math
> 60 days ago

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aqblickley
aqblickley writes:
Hi afzaal,

The numerical value of pi is 3.1415926... It is a mathematical constant, and you can go on forever adding digits after the decimal point.

However, the value of pi is equal to the ratio of any circle's circumference to its diameter.

In the Resources section below, I'm including a link to a page that explains the concept further, and includes a diagram and equation that illustrate pi.

Hope this helps!

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pigtoria
pigtoria writes:
Hi Afzaal…..

Mathematicians have found that pi = 3.14 but the question is how do we know that that’s the real value.  How can we prove that pi = 3.14 for ourselves?

You can do this using the formula C = pi * d (circumference = pi * diameter).  If you know the value for the circumference and diameter, then you will calculate the value of pi.  

One way to do this is to measure a paper plate’s circumference and diameter (use centimeter as the unit).  Measuring the circumference is easier as it’s the outer circle around the plate.  The diameter might be a bit tricky to do as it’s the largest measurement across the circle – in other words, the middle or center of the circle.  The best way to get the diameter is to fold the paper plate in half and then measure the folded line. After you have the measurement for circumference and diameter, you can calculate for pi.  Have fun!

Hope this helps!

Vicki
> 60 days ago

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