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Q.

Assuming that the earth describes in one year a circle, of 92500000 miles radius, whose center is the sun, how many miles does the earth travel in a year?


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a

530900

b

5509000

c

5009000

d

5809000 

answer is D.

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Detailed Solution

Concept: We will use the following conversions, the circumference of the circle is 2πr where r is the radius of the circle, which is 925000 miles. So, the distance covered by the earth will be equal to the circumference of the circle.
radius=Question ImageTotal distance= circumference of the circle
Formula is Question ImageQuestion ImageQuestion ImageQuestion ImageQuestion ImageorQuestion ImageHence, the correct option is (4) .
 
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