A 30 cm long, 20 cm wide rectangular cardboard, four corners of each cut side length is 5 cm square, just folded into a carton without cover, What's the volume of this carton?

A 30 cm long, 20 cm wide rectangular cardboard, four corners of each cut side length is 5 cm square, just folded into a carton without cover, What's the volume of this carton?

Volume = length * width * height = (30-5-5) * (20-5-5) * 5 = 20 * 10 * 5 = 1000 CC