What unit would you use to measure a hallway

Inches or yards. Inches are bigger than cm so that may be logical and yards are similar to metres. Miles are massive. I think Inches... but it depends how long it is... if its long or short. :)

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.