###Human: Nancy replaced all of the old vinyl tiles in her bathroom with new hardwood flooring.  She replaced flooring in two areas of the bathroom: a 10 foot by 10 foot central area, and a 6 foot by 4 foot hallway.  How many square feet of hardwood flooring did Nancy install in her bathroom?, ### Assistant: 10 feet by 10 feet central area is 10*10=100 square feet of space.
6 feet by 4 feet hallway is 4*6-24 square feet of space.
Combined, the two areas where she replaced flooring contain 100+24=124 square feet of space. 
 So the answer is :  124