Question

Area of a circle = p · r2 i know r is for radius but p stands for what when your solving 40/360 or 1/9 of the area. I know radius is 2 so it be P times 2^2 but what number is P

Answer 1

\[\huge p = \pi \approx 3.14\]

Answer 2

it's called pi , and it's a very important mathematical constant

Answer 3

oh pie yeah i was confused with perimeter