0
In certain formulas, including most that involve circles, you will see 'pi'.
This pi always has the same value, approximately 3.14159...
However, this number is irrational, which means it never terminates (ends) or repeats.
But what exactly is pi? Pi is the ratio between any circle's circumference and its diameter. This ratio is always the same, no matter how big or small the circle is, but the degree of precision might vary depending on how big the circle is.
Why is Pi useful?
Pi allows us to calculate the diameter or area of any circle, but also has many other uses.
In order to use these formulas, though, we need to define the terms we are using.
Circumference - the distance around the circle
Diameter - the length of a straight line segment that passes through the center of the circle
Radius - the distance from the center of the circle to the circle itself
To calculate the circumference, multiply the diameter by pi (3.14...)
To calculate the area, square the radius, then multiply this by pi (3.14...)
In symbols:
Circumference = diameter x pi
Area = (radius)2 x pi
Hope this helped.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
In the formula of pi what dose s stands for?
there is no s in PI
What is cicumference in math?
A circumference is the distance around a circle. To find a circle's circumference you need to follow the formula: d*pi The d stands for diameter and pi is 3.14. You need to mulitply the length of the diameter by pi for the circumference. Or, if the diameter isn't given, multiply the radius by 2 and then multiply that by pi.
What is the formula for a circle in math?
The area of a circle is pi times r squared.
What is the area of the circle with a 10 radius?
Here is the formula for area (you do the math) pi = 3.14 r = radius Area = pi * r2
What do you do when you have a formula of 2 pi r?
That's the formula for the circumference of a circle, when you know the radius. What you do is multiply all three together. Pi is approximately 3.14, and r stands for the radius. The result of the multiplication is the circumference.
In the formula of pi what dose s stands for?
there is no s in PI
What is the formula of percentage?
The formula of percentage is pi. This is used in math.
What is cicumference in math?
A circumference is the distance around a circle. To find a circle's circumference you need to follow the formula: d*pi The d stands for diameter and pi is 3.14. You need to mulitply the length of the diameter by pi for the circumference. Or, if the diameter isn't given, multiply the radius by 2 and then multiply that by pi.
What does pi r squared mean in math?
That's the formula for the area of a circle.
What is the formula for a circle in math?
The area of a circle is pi times r squared.
How do you do math problems using pi?
Well, first you need to know the formula for what you are doing (usually with pi it is area or circumference).
What is the area of the circle with a 10 radius?
Here is the formula for area (you do the math) pi = 3.14 r = radius Area = pi * r2
What extraordinary Indian math mathematician created a formula to rapidly calculate the value of pi?
Ramanujan
How do you calculate the circumference of a circle if you know the diameter?
Multiply the diameter by Pi as the formula Pi x d = Circumference. Where d stands for diameter.
Pi in additional math?
Pi=3.14 in basic math
What do you do when you have a formula of 2 pi r?
That's the formula for the circumference of a circle, when you know the radius. What you do is multiply all three together. Pi is approximately 3.14, and r stands for the radius. The result of the multiplication is the circumference.
What is pie are square?
This is a play on words on the well known area of a circle formula; (pi)r^2 pi= 3.14 and r stands for your radius. BTW Pie are round.
