What is the percentage of the sedimentary rock cover of the Continents of the earth's surface?

Q. What is the percentage of the sedimentary rock cover of the Continents of the earth's surface?
Answer: 73 %
Notes: Sedimentary rocks makeup only 8 % of the volume of Earth's crust. And the percentage of the sedimentary rock cover of the continents is almost 73 % of the earth's surface.

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