The answer to this question is <span>from telephone to telegraph to cell phone.
Telegraph was invented way before the telephone. Telegraph was developed around 1837 by utilizing the morse code.
The telephone, on the other hand, was developed around 1876s by famous inventors name Alexander graham bell</span>
Mohamad Gandhi that’s one please press thank you i don’t know the other one
Cone volume = (pi*r*r*h)/3
where r is radius and h is height
Put in what we know
pi is about 3.1415
4 = (3.1415*3*3*h)/3
4 = 28.274*h/3
4 = 28.274/3*h
4 = 9.425*h
h = 4/9.425=0.424
and that would be in inches so
Height is about 0.424 inches.
It can be rounded to 0.42