On a scale drawing, a rectangle 1 inch by 1~$\frac{1}{3}$~ inches represents the floor of a room and the indicated scale is 1 inch equals 15 feet. How many square tiles 6 inches on a side will be needed to cover this floor? (1 foot= 12 inches)

In the floor plan of an executive's beach house above, the north and south walls of the living room are parallel. what is the floor area, in square feet, of the bedroom?

Three-fourths of the area of a rectangular lawn 30 feet wide by 4o feet long is to be enclosed by a rectangular fence. If the enclosure has full width and reduced length rather than full length and reduced width, how much less fence will be needed?

If rectangle ABCD is inscribed in the circle above, what is the area of the circular region?