5. The largest mosaic in the world is on the walls of the central library of the

Universidad Nacional Autonoma de Mexico in Mexico City. The mosaic depicts

scenes from the nation's history and covers an area of 4000 m2. If the entire

mosaic were on one square wall, what would the dimensions be? Estimate your

answer to the nearest whole number and then use your calculator to get the

length to the nearest HUNDRETH.