Multiple Line Title and Variable insertion

I can't get the last set of strings to stay on the same line as the variable i just inserted. I've tried [] {} and () brackets with no luck.

ThisNumber = 50;
x = [1:200];
Wave1 = sin(x);
Wave2 = cos(x);
plot(Wave1,Wave2)
title({'This is the first line','The total size of this is' int2str(ThisNumber) 'cm'})

This is the output

This is the first line
The total size of this is
50
cm

I need it to look like

This is the First Line
The total size of this is 50cm

Answer 1

[Star Strider]

It is easier to do this with the sprintf funciton:

title(sprintf('This is the first line\nThe total size of this is %d cm', ThisNumber))

Answer 2

[KSSV]

ThisNumber = 50;
x = [1:200];
Wave1 = sin(x);
Wave2 = cos(x);
plot(Wave1,Wave2)
title({'This is the first line',strcat('The total size of this is', int2str(ThisNumber),'cm')})