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.
Add two numbers
Omit columns averages from a matrix
Create a vector whose elements depend on the previous element
matrix of natural number
Matlab Basics II - Create a vector with a repeated entry
Volume of Spherical Shell
Perimeter of a quadrilateral
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