Posted by **mike** on Thursday, October 20, 2011 at 1:20pm.

a satellite orbits the earth in circular orbit 620 km above the suface. if the radius of the earth is 6380 km, calculate, to 3 significanf figures, the distance travelled in a single orbit?

- earth -
**Ms. Sue**, Thursday, October 20, 2011 at 1:26pm
C = pi * d

C = 3.14 * (12,760 + 1,240)

C = ?

- earth -
**Kevin **, Thursday, October 20, 2011 at 1:29pm
circumference of a cirle = pi x diameter.

pi = 3.1415926535 (or just use pi button on calculator)

Diameter = 2 x radius

radius = 6380 (+620) or 7000km

now you have all the info you need, plug in the numbers

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