Find vevo where
ve: Escape velocity of satellite at the surface of earth.
vo: Orbital velocity of satellite orbiting at the surface of earth.
Escape velocity at surface of earth is given by:
ve=√2GMR
Orbital velocity of satellite at height h above the surface of earth is given by:
vo=√GMR+h
At surface of earth, h=0
∴vo=√GMR
From above,
vevo=√2GMR√GMR=√2