MATLAB: What is code to call a function

Question

question asks for code to call a function what is this and please explain in detail for this function so that even a layman can understand

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

Answer 1

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)