Asoup can has a height of 4.25 inches and a diameter of 3.25 inches. which of the following is the closet to the volume of the soup can

Assuming your soup can is a cylinder

volume of cylinder=hpir^2
diameter/2=radius
diameter=3.25
3.25/2=radius=1.625

h=4.25
r=1.625
so 
volume=(4.25)(pi)(1.625^2)
volume=(4.25)(pi)(2.640625)
volume=11.22265625pi
if you aprox pi to 3.14 then
volume=11.2265625(3.14)
volume=35.239140625 in^3

so pick either
11.22265625pi in^3 or
35.239140625 in^3 or whichever is closest

To increase an amount by11% you need ro Multiple by 1.11