just remember it by 3.14
The best way to remember pi is by memorizing the sentence:
"How I wish I could determine of circle round the exact relation Archimede found"
The number of letters in each word of this sentence represents one figure of pi. Only the last figure (5) from the word "found" does not correspond to the correct figure of pi in its position.
you see pi is easy as pie all you have to do is remember 3.14159265
here is 150 digits of pi by memory; 3.14159265358979323846264338327950288419716939937510582097494459230781640 628620899862803482534211706798214808651328230664709384460955058223179408128
Remember the circle eq'n C = pi*d Algebraically rearranging d = C / pi Hence d = 52 pi / pi Cancel down by 'pi' Hence d = 52.
you use the formula A = pi r2. r is the radius and a is the area of a circle. you can use the formula in revers by doing the r = squareroot(A/pi). a easy way to remember the formula pi r2 is to remember that "pies are square" even though they are round.
Circumference of a circle = diameter*pi Diameter of a circle = circumference/pi
Me, 73. 3.14159265358979323846264338327950288419716939937510582097494459230 7816406. A lot, huh?
Remember this and you'll be fine Three point one four one five nine
circumference=pi * diameter radius= 1/2 diameter
Any formula involving a circle will have "pi" in it. Area = pi* radius * radius Circumference = pi * diameter = pi * radius * 2 ( the diameter is just 2 times the radius) Quick way: A = pi r squared C = pi D
42,195 decimal places
Area of a circle is pi times radius squared.
You can't. Pi is just... idk... pi and taking the square root of pi would only lead you to another infinite irrational number. Unless you want gazillion zillion numbers, don't square root pi. I can give you the result of pi for up to whatever the calculator says, which by far is 1.772004515. But... remember the answer is infinite!