Get the area of the square.
Four circles are inscribed in the square ABCD. The perimeter of each circle is *aπ*.
<<http://imgfz.com/i/UzgCJut.png>>
Gi...
Calculating Ring Area
In two-dimensional space, a ring can be constructed by using two concentric circles. Determine the area of a ring which has r1 ...
Variance computation (★)
Given a vector x with several values, compute the variance, whose formula is given by:
<<https://i.imgur.com/Wg95KBE.gif>>
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