First, find the area of the reptile room and the aquarium. A=l*w=72*83=5,976 Second, find the area of ONLY the reptile room. A=l*w. l=72-52=20 w=83-32=51 A=20*51=1,020 Third, find the area of the Amphibian room and the aquarium. A=l*w=72*83=5,976 Fourth, subtract the area of the reptile room from the area of the Amphibian room. 5, 976 - 1,020=4,956=Amphibian room area. Fifth, add the area of the amphibian room to the area of the reptile room and the aquarium. 4,956+5,976=10,932 ft^2 is the total area of both rooms and the aquarium.
