MATLAB: Error using patch Vectors must be the same length.

patchpatch error

this script optimizes the cheapest cost for an open top rectangular box it works fine until i display the cheapest cost of a box but when i try to use the length ,width and height of the box to plot its 3d diagram of a box it throws an error that " Error using patch Vectors must be the same length."
regards.
%% Cheapest Price for Rectangular Box
%%
vol=input('Enter volume of box : ');
syms l x h positive
eqn=10*2*x*x+12*2*x*(vol/(2*x*x))+12*(vol/(2*x*x))*x;
seceqn=diff(eqn);
width=solve  (seceqn==0,x);
l=2*width;
h=vol/(l*width);
cost=10*2*width*width+12*2*width*(vol/(2*width*width))+12*(vol/(2*width*vol))*vol;
cost=double(cost);
disp('Cheapest Cost is  = ');
disp(cost);
patch([0,l,l,0],[0,0,width,width],[0,0,0,0],'blue')
patch([0,l,l,0],[0,0,0,0],[0,0,h,h],'red')
patch([0,l,l,0],[width,width,width,width],[h,h,0,0],'green')
patch([0,0,0,0],[0,0,width,width],[0,h,h,0],'black')
patch([l,l,l,l],[0,0,width,width],[h,0,0,h],'yellow')

Best Answer

Try this code
%% Cheapest Price for Rectangular Box
%%
vol=input('Enter volume of box : ');
syms l x h positive
eqn=10*2*x*x+12*2*x*(vol/(2*x*x))+12*(vol/(2*x*x))*x;
seceqn=diff(eqn);
width=solve  (seceqn==0,x);
l=2*width;
h=vol/(l*width);
cost=10*2*width*width+12*2*width*(vol/(2*width*width))+12*(vol/(2*width*vol))*vol;
cost=double(cost);
disp('Cheapest Cost is  = ');
disp(cost);
l = double(l);
width = double(width);
h = double(h);
patch([0,l,l,0],[0,0,width,width],[0,0,0,0],'blue')
patch([0,l,l,0],[0,0,0,0],[0,0,h,h],'red')
patch([0,l,l,0],[width,width,width,width],[h,h,0,0],'green')
patch([0,0,0,0],[0,0,width,width],[0,h,h,0],'black')
patch([l,l,l,l],[0,0,width,width],[h,0,0,h],'yellow')
view(3);
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