In two-dimensional space, a ring can be constructed by using two concentric circles. Determine the area of a ring which has r1 as the inner radius and r2 as the outer radius.
Number of 1s in a binary string
Remove the two elements next to NaN value
03 - Matrix Variables 6
Matlab Basics - y as a function of x
Perimeter of a quadrilateral
Volume of Spherical Shell
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