Rods $\backslash ($ A C $\backslash )$ and $\backslash ($ B C $\backslash )$ are used to suspend the $210$ kg mass.

$($Figure $1)$

Part A

If each rod is made of a material for which the average normal stress can not exceed $150$ MPa $,$ determine the minimum required diameter of each rod to the nearest mm$.$ Express your answer as an integer and include the appropriate units.