Can someone explain this?

pir^2
p12^2
pi144

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511KB, 1024x1024px

>>191541
ty anon

You can't fucking skip it, senpai.Late trigonometry will fuck your ass anyway, but without you knowing basic it will fuck you with your ass bleeding.
pi=circumference/diameter (that's the whole point of pi)
so if you need circumference
circumference=diameter*pi
in the late game you will use pi just as constant in formulas, without thinking what it is

>>191541
lol

anon, honestly, this is something you learn in school at age 10

learn your math lessons and then use them

>>191541
that's area you faggot

Circumference is pi times the diameter
Why are you doing elementary school stuff Anon?

>>191536
Circumference = Pi x Diameter
Diameter = 14
Circumference = 14 Pi

>>191536
Nothing to explain. By definition, pi is the ratio between a circle's circumference and its diameter. The answer is 14.

2.718281828

>>191987
you just gonna truncate it at 9 decimal places? that's 2.71828182845904523536028747135266249775724709369995… to you anon