physics problem i do not know can you help me i would appreciate it

A car engine moves a piston with a circular cross section of 7.400 ± 0.006 cm diameter a distance of 3.270 ± 0.001 cm to compress the gas in the cylinder. (Express your answers to the correct number of significant figures.)
(a)
By what amount is the gas decreased in volume in cubic centimeters?
cm3
(b)
Find the uncertainty in this volume.
cm3