V=(1/3)hpir^2 d/2=r 2.75/2=1.375 to make volume 4 times more multiply height by 4 or multiply radius by 2 example find current cup volume V=(1/3)2.75pi1.375^2=2.2057291666666pi
if we times height by 4 3.5*4=14 V=(1/3)14pi1.375^2=8.822916666666666666pi
if we times radius by 2 1.375*2=5.5 V=(1/3)3.5pi5.5^2=8.822916666666666666pi
we can show it is 4 times by 8.822916666666666666pi/2.2057291666666pi= 3.99999 close enough dimentions are
diameter of 2.75in and height of 11in or diameter of 5.5in and height of 3.5 in
