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OpenStudy (anonymous):

Mercury rotates at a speed of 11 km/h. Therefore the circumference of Mercury is approximately 1) 1 550 km. 2) 9 200 km. 3) 12 100 km. 4) 15 600 km.

OpenStudy (anonymous):

i think we will be needing time period of rotation of mercury.

OpenStudy (anonymous):

also you need to tell which part of mercury (distance from centre and angle with equator) is travelling with this speed since linear speed is different for different parts

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