on a partime job you are asked to bring a cylindrical iron rod of legnth 85.8 cm and diameter 2.85 cm from a storage room to a machinist. will you need a cart? (to answer calculate the weight of the rod.)

Answer 1

well, I am just going to estimate
iron density about 8 times water
8000 kg/m^3 or 8 g/cm^3

8 L pi r^2 = 8(85)(3)(2.5)^2
about 8 * 85 *3 * 6.3
or 12852 grams
12.8 kg

no problem :) less than 30 pounds