Question

what formula do you use to find the area of a circle?

Answer 1

The area of a circle is π (Pi) times the Radius squared:
A = π × r2

Or, when you know the Diameter:


A = (π/4) × D2

Or, when you know the Circumference:


A = C2 / 4π

Hope it helps

Answer 2

Its Area = 3.14r^2 or pie multiplied by r or the radius then square the product