Please help!! Honors Physics; the speed of a satellite that is in orbit 245 km above Mercury's surface

Name: Mercury
Average Radius (m): 2.44 x 10^6
mass(kg): 3.30 x 10^23
Mean distance from sun (m): 5.79 x 10^10

a) the speed of a satellite that is in orbit 245 km above Mercury's surface
b)The period of the satellite.

Thanks :)

I give the formula you calculate.
For velocity at a radius R(orbit) is
v=sqrt(G.M/R) G=universal gravitational const.
M=mass of the Mercury
Period T=2.pi.R^3/2/sqrt(GM)

laila
the speed of stellite is equals to the speed with which ur vagina will be penetreated hard

and period is 9 months