Calculate the area of an equilateral triangle of side x.
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yes nice problem
Read a column of numbers and interpolate missing data
Solve the set of simultaneous linear equations
Flip the main diagonal of a matrix
Right Triangle Side Lengths (Inspired by Project Euler Problem 39)
Is this triangle right-angled?
Side of a rhombus
Side of an equilateral triangle
Find a Pythagorean triple
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