Rectangular steel Solid beam of length $3$m$,$ width $50$mm and thickness $25$mm mass moment of inertia would be: Ave

Density $7500$ kg$/$m$^3$ E$-200$ GPS $200010$

a $*21\mathrm{.}09$kg $.$m$^3$

b $-28\mathrm{.}1$kg $.$m$^3$

c $*6\mathrm{.}5$kg $.$m$^3$

d $-17\mathrm{.}2$kg $.$m$^3$