Use the formula: A = πr²
A = area of the circle
π = pi, about 3.14159
r = radius of the circle
Square the radius
Multiply the result by π
The result is the area of the circle
Use the formula: A = πr²
A = area of the circle
π = pi, about 3.14159
r = radius of the circle
Square the radius
Multiply the result by π
The result is the area of the circle