In open$-$die forging, a solid cylindrical workpiece $(3\mathrm{.}5$ in $.$ high and $5$ in $.$ in diameter$)$ of AISI $1020$ carbon steel $($density $=0\mathrm{.}29l\frac{b}{i}{n}^3$ and specific heat $c=0\mathrm{.}12Bt\frac{u}{l}b*F)$ is to be reduced in height by $30\%.$ Let the friction coefficient be $0\mathrm{.}2.$ The strength coefficient is $72\mathrm{.}5$ ksi $,$ and the strain hardening exponent is $0\mathrm{.}26.$ Calculate the temperature rise of the workpiece.