a cylindrical cake of maximum volume is to be cut out of a cube of side 4 cm. find the maximum value of the cake

as the diameter of the cylinder is the side of the cube,the radius of the cylindr will b 2 cm.
the height will b equal 2 the side of the cube, height is 4 cm.
r = 2 cm
h = 4 cm
v of cylinder = pi r^2 h
v = pi * 2*2*4
  = 22/7 *16
  = 50.285