Please improve the test suite. There is only one test case—three is a recommended minimum, though more may be necessary to completely and adequately test what is being asked.
radius of a spherical planet
Return area of square
Side of a rhombus
Create an anti-identity matrix
Square a Number
Matrix Ax=B problem
Sum two matrices
String Delimination and Outputting
Automatic String Editing
Find the index of the lowest number in a matrix
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