Q$2(20\%6)$ A $20$ mm diameter and $30$ mm height metal cup will be drawn from $3$ mim thick. blank. If the shear strength of the steel sheet is $35k\frac{g}{m}{m}^2,$ cetleutive:

a$)$ Initial blank diameter

b$)$ Blanking load

c$)$ Deep drawing steps $($Assume redrawing ratios are: $1\mathrm{.}43,1\mathrm{.}33,1\mathrm{.}25,1\mathrm{.}19,1\mathrm{.}14$ and $1\mathrm{.}11)$