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Area of circle formula reviewer and interactive calculator
Area, A
=
given radius
Formula Area = π r 2
do not enter comma symbol , because Not a Number. NaN error message
Area, A
=
given diameter
Formula Area, A = ( π/4 ) d 2
Click the image below to open the calculator
for circumference of a circle
Students are expected to master the attributes of circles such as:
Equation of a Circle given Center & a Point Circumference of a CircleLength of Chord of a Circle Circular Segment Area Application of Circular Segment Area
Equation of a circle given 3-points Perimeter of Circular Sector Calculator
Area of Circular Sector Calculator
