Iwant to calculate my speed when riding my bicycle around the park what 2 measurement will i need to make

Ghana, first of the great medieval trading empires of western africa (fl. 7th–13th century). it was situated between the sahara and the headwaters of the sénégal and niger rivers, in an area that now comprises southeastern mauritania and part of mali.

That huge volcanoes  can  be found here? from the air,  you  see that it covers a huge area, about 14 million square kilometers   antarctica  is just slightly larger than  another  continent in the southern it is  located  on the coast and is 4,876 meters (16,000 feet) tall. under the surface of  antarctica, all is  notcold and quiet.