Area circle

area circle — circle area

Area of a circle

Category = Pi • r²

Category – circular area

Pi – Kreiszahl Pi = 3,1415

r – Radius

example:

Calculate the area of a circle using the radius
r = 6 cm.

Category = Pi • r²

Category = 3,1415 • (6cm •6cm)

Category = 3,1415 • 36 cm²

Category = 113,094 cm²

circle area

Circle area formula

$A=\frac {\pi \cdot d^{2} }{4}$

Category – circular area

Pi – Kreiszahl Pi = 3,1415

Glutos – diameter

example:

Calculate the area of a circle with the diameter
d = 11 cm

$A=\frac {\pi \cdot d^{2} }{4}$

$A=\frac {3,1415 \cdot 11^{2} }{4}$

$A=\frac {3,1415 \cdot 121}{4}$

$A=\frac {380,1215}{4}$

$A=95,030375 cm^{2}$

Calculate Circle Area Calculator⇓