To find the volume of the seashell, we will use the formula
[tex]V=\frac{1}{3}\pi r^2h[/tex]where V is the volume
r is the radius and h is the height
From the question, r =8 and h = 63
substitute the values into the above and evaluate
[tex]V=\frac{1}{3}\times\pi\times8^2\times63[/tex][tex]=1344\pi[/tex]substitute the value of pie = 22/7
[tex]=1344\times\frac{22}{7}[/tex][tex]=4224mm^3[/tex]