MATLAB: What is wrong with the function

Question

here is the Question that I want to Answre:

(Write a function called tri_area that returns the area of a triangle with base b and height h, where b and h are input arguments of the function in that order.)

function area = tri_area(b,h)
area = b*h;
end

Answer 1

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