In MATLAB please.
Write a function called circle that takes a scalar input r. It needs to return an output called area that is the area of a circle with radius r and a second output, cf that is the circumference of the same circle. You are allowed to use the built-in function pi. In fact, you need to use it to get the value of π as accurately as possible.

function [Area,Perimeter,L]=f_circle(x)

 % Area: pi*x^2 area of circle with radius x

 % Perimeter: 2*pi*x perimeter length of circle with radius x

 % x can be a vector

 minargs=1;maxargs=1;narginchk(minargs,maxargs);  % only 1 input accepted

   if ~isequal('double',class(x))                   5 input has to be type double

       disp('input type not double');

       return;

   end

   Area=pi*x.^2;

   Perimeter=2*pi*x;

 end