Find the number of points (x,y) in square lattice with x^2 + y^2 =< n. This is related to Jame's Problem 1387. Here you have to find the number of points within a circle.
given 3 sides, find area of this triangle
Better bullseye matrix
Find third Side of a right triangle given hypotenuse and a side. No * - or other functions allowed
Calculate the derivative of a polynomial
Periodic Table 101.
Change the sign
Periodic Table II 101.
Fahrenheit to Celsius converter
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