What is the size of earths crust????

Question

i neeed the real size and answer quick plus dont lie cuz this EXTTREMLY IMPORTANT.Please give me the real size and if u can give me the link 2where u got it?

Answer 1

The crust covers the mantle and is the earth's hard outer shell, the surface on which we are living. Compared to the other layers the crust is much thinner. It floats upon the softer, denser mantle. The crust is made up of solid material but this material is not the same everywhere. There is an Oceanic crust and a Continental crust. The first one is about 4-7 miles (6-11 km) thick and mainly consists of heavy rocks, like basalt. The Continental crust is thicker than the Oceanic crust, about 19 miles(30 km) thick. It is mainly made up of light material like granite.  

Answer 2

The crust is approximately 7 km thick benath the oceans and 35 to 40 km thick beneath the continents.