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The Lee family wants to buy a new round dining table. Their rectangular door frame is 3 feet wide and 6.5 feet high. If the legs are attached to the table, approximate the greatest length of its diameter so that the table can be placed into the dining roo...

As part of a training exercise, 16 firemen need to carry equipment up a ladder hooked to the top of an office building that is 15 meters tall. If the base of the ladder is 7 meters from the wall, about how long is the ladder?