In 2010 an enormous sinkhole suddenly appeared in the middle of a Guatemalan neighborhood and

swallowed a three-story building above it. The sinkhole has an estimated depth of about 100 feet.

How much material is needed to fill the sinkhole? Determine what information is needed to answer the

question. Do you think your estimate is more likely to be too high or too low?

What are some material options for filling the sinkhole, and how much would they cost? Which material

do you think would be the best choice?