The figure shows an iron ball suspended by thread of negligiblemassfrom an upright cylinder that floats partially submerged inwater.The cylinder has a height of 6.80 cm, a face area of12.0cm2 on the top and bottom, and a density of0.280g/cm3, and 2.30 cm of its height is above thewatersurface. The water has a density of 1000 kg/m3, andtheiron has a density of 7900 kg/m3. What is theradiusr of the iron ball?
