Speed and period of a satellite

A satellite travels on a circular orbit at an altitude $h=1000\mathrm{km}$ above the Earth’s surface. Compute the speed and the period, with $G{M}_T=3.98\cdot 10^{14}{\mathrm{m}}^3/{\mathrm{s}}^2$ and $R_T=6.37\cdot 10^6\mathrm{m}$.