1 How... is the River Thames? (346 km) 2 How... is the Statue of Liberty? (46 m) 3 How... is a baby elephant? (about 90 kg) 4 How... is the British Museum? (about 250 years) 5 How.... is the English Channel? (from 3 to 5 km) 6 How.... is Mount Everest? (8,848 m)