On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 kg/m3, length 89.5 cm, and diameter 2.65 cm from a storage room to a machinist. Calculate the weight of the rod, w. Assume the free-fall acceleration is g = 9.80 m/s². Express your answer numerically in newtons.

a) 11.87 N
b) 13.25 N
c) 15.42 N
d) 17.76 N