A block of solid lead sits on a flat, level shelf. Lead has a density of $1\mathrm{.}13{10}^{4}k\frac{g}{m^3}.$ The mass of the block is $21\mathrm{.}4$ kg $.$

$($a$)$ What is the volume of the block $($in $m^3)?$

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$m^3$

$($b$)$ The amount of surface area of the block in contact with the shelf is $4\mathrm{.}03{10}^{-2}{m}^2.$ What is the average pressure $($in Pa$)$ exerted on the shelf by the block?

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Knowing the mass, what is the weight applied to the contact area? What is the definition of pressure? Pa