(a) The length of the wire will be 11 cm
(b) The diameter of the wire will be 3.2 cm
This is found from the formula to find the length of a cylinder
This formula is
L=pi*D²*h
Where L is the length of the cylinder in cm, D is the diameter of the cylinder in cm, and h is the height of the cylinder in cm.
By using the values from the question, the result is 11.024 cm for the length and 3.221cm for the diameter