Answer:
The answer is [tex]V = 1.785 \times 10^{10}\ Km^3[/tex].
Explanation:
You are asking only for the total volume, so the important data here is the surface area of the earth's crust,
[tex]A = 5.10 \times 10^8\ Km^2[/tex]
and the average thickness of the earth's crust,
[tex]h = 35\ Km[/tex].
Imagine that you can stretch the surface area as if it were a blanket, now if you want to calculate its volume, you just need to multiply its area by its thickness,
[tex]V = A*h = 1.785 \times 10^{10}\ Km^3[/tex].
