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Area of Circles
Author:
Anthony OR 柯志明,
Ciro Petrosillo
What is the area of a circle? Explore with the following applet.
Anthony Or, Education Bureau, Hong Kong.
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max and min
Dani_NumericalInvariantsD
Dani_invariants
JacobZinner_NumericalIncariantsD
testfileTue Oct 16 23:38:05 CEST 20180.09987355099526729
