# Points on circle

In the Cartesian coordinate system with the origin O is a sketched circle k /O; r=2 cm/. Write all the points that lie on a circle k and whose coordinates are integers. Write all the points that lie on the circle I / O; r=5 cm / and whose coordinates are integers. How many points is it?

### Correct answer:

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Do you solve Diofant problems and looking for a calculator of Diofant integer equations?

Pythagorean theorem is the base for the right triangle calculator.

See also our trigonometric triangle calculator.

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