SOLUTION: In 2005 a planet was found revolving about a distant sunlike star in 4.55days. The radius of it's orbit is 2,500,000 mi. What is it's linear velocity (in mi/hr) about it's star?

Question 268082: In 2005 a planet was found revolving about a distant sunlike star in 4.55days. The radius of it's orbit is 2,500,000 mi. What is it's linear velocity (in mi/hr) about it's star? Round to the nearest thousandth as needed.
I am stuck on this please help me? Thank you!
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
4.55 days = 109.2 hours
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Orbit = 2500000*2*pi =~ 15707963 miles
15707963 miles/109.2 hours =~ 143,845.818 mi/hr
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The Earth's orbital speed is ~ 67,000 mph
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PS it's = it is
Use its for possessive
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