Pi (π) is an irrational number approximately equal to 3.14159... It represents the ratio between the circumference and diameter of any circle.
Imagine you have a delicious pizza pie with perfectly circular slices. Pi (π) is like taking one slice and measuring its crust length compared to its diameter - no matter how big or small your pizza slice is, this ratio will always be pi!
Circumference: The distance around the edge of a circle. It can be calculated using the formula C = 2πr, where r is the radius.
Area of Circle: The amount of space enclosed within a circle's boundary. It can be calculated using the formula A = πr^2, where r is the radius.
Trigonometry: A branch of mathematics that deals with relationships between angles and sides in triangles, often involving trigonometric functions such as sine, cosine, and tangent.
© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.