The measurement of the surface enclosed by a circle.
Formulas
A = \(πr^{2}\) or A = \(π\frac{d^{2}}{4}\)
Example
Consider a circle with a radius of 10 cm.
\(A = πr^{2} = π × 10^{2} = 100π\).
\(A ≈ 314.16\)
A = \(πr^{2}\) or A = \(π\frac{d^{2}}{4}\)
Consider a circle with a radius of 10 cm.
\(A = πr^{2} = π × 10^{2} = 100π\).
\(A ≈ 314.16\)