You need to fix some issues: you only have one test working, you are rounding to 3 decimal places, and the last test case is false (it should give 502.655)
also you shouldn't use isequal when you use pi.
The value of pi is wrong, but so it is the test suite.
select the primes of a vector
Is it a number?
Number of odd and even elements within matrix
Length of a short side
Sum of the Matrix Elements
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