What is the code to call this function?

The question asks for code to call this function below. What is it?

Please explain in detail the call for this function so that even a layman can understand it.

% Function to compute the area of a triangle.
% The area is one half the base width times the height.
function [area] = tri_area(b, h)
    tri_area(b,h) = (1/2) *  b * h ;
    % area = tri_area(b, h);  % Sample call.
end

Answer 1

[Fangjun Jiang]

The function should be written like this and saved as tri_area.m

function [area] = tri_area(b,h)
      area=1/2*(b)*(h);  
end

Then in MATLAB Command Window, call the function like this

TheArea=tri_area(4,5)