Calculate the mass of a solid gold rectangular bar that has dimensions lwh $=4\mathrm{.}60$ cm $15\mathrm{.}0$ cm $25\mathrm{.}0$ cm$.($The density of gold is $19\mathrm{.}3103$ kg$/$m$3.)$

kg

$($a$)$

What is the volume of the girl's body $($in m$3)$ if her average density is $983$ kg$/$m$3?$

m$3$

$($b$)$

What average pressure $($in Pa$)$ from her weight is exerted on the horizontal surface if her two feet have a combined area of $1\mathrm{.}28102$ m$2?$

Pa