The child's physical density is being measured by the displacement method. a child of 50 pounds is place in a tub filled with water, and the water that comes out of the tub goes in to another small tub that measures 40 cm long, 30 cm wide, and 60 cm deep. the water level in the small is 18 cm high. find the density of the child's in gn/cm^3 to the nearest hundredth. (hint: density=mass/volume; 1 pound= 454 grams