Normal stick

Lenght: 20cm = 0,2m
Diameter: 2,5cm = 0,025m
Radious: 0,0125m
Volume: (3,14x0,0125^2)x0,2= 0,000098125m^3 or 98,125cm^3

Minecraft stick

Lenght: 100cm = 1m
Diameter: 25cm = 0,25m
Radious: 0,125m
Volume: (3,14x0,125^2)x1= 0,0490625m^3 = 49062,5cm^3

Ratio: 49062/98,125=500