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The minute hand on a watch is 8 mm long and the hour hand is 4 mm long. How fast is the distance between the tips of the hands are changing at one o’clock?

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Jamar Ferry
Jamar FerryLv2
23 May 2020

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1. Please solve all of  these sums as early as possible.

1. A satellite is in a circular orbit 248 km above the equator of the earth, How far must it travel for its longitude to change by 66.0 degrees, Report your answer in km to 2 decimal places, Assume the radius of the earth is 6, 982.
2. Find the length of the arc s subtended by a central angle of 123°85' in a circle of radius 6.3 cm. Report your answer in cm to 2 decimal places. 
3. A steel bar with a radius of 4 inches is being ground in a lathe. The surface speed of the bar is 11 ft/min. How many revolutions will the bar make in 38 sec. Report your answer to 2 decimal places, 
4. The hour hand of a clock is 77.0 mm long. How far does the tip of the hand travel between 2 o'clock and 7 o'clock? Report your answer in mm to 2 decimal places. 

Please solve all of  these sums as early as possible.

1. A satellite is in a circular orbit 248 km above the equator of the earth, How far must it travel for its longitude to change by 66.0 degrees, Report your answer in km to 2 
decimal places, Assume the radius of the earth is 6, 982.
2. Find the length of the arc s subtended by a central angle of 123°85' in a circle of radius 6.3 cm. Report your answer in cm to 2 decimal places. 
3. A steel bar with a radius of 4 inches is being ground in a lathe. The surface speed of the bar is 11 ft/min. How many revolutions will the bar make in 38 sec. Report your answer to 2 decimal places, 
4. The hour hand of a clock is 77.0 mm long. How far does the tip of the hand travel between 2 o'clock and 7 o'clock? Report your answer in mm to 2 decimal places. 

1. Please solve these sums as early as possible.

1. A satellite is in a circular orbit 248 km above the equator of the earth, How fr must it travel for its longitude to change by 66.0 degrees, Report your answer in km to 2 
decimal places, Assume the radius of the earth is 6, 982.
2.Find the length of the arc s subtended by a central angle of 123°85' in a circle of radius 6.3 cm. Report your answer in cm to 2 decimal places. 
3.Asteel bar with a radius of 4 inches is being ground ina lathe. The surface speed of the bar is 11 ft/min. How many revolutions will the bar make in 38 sec. Report your 
answer to 2 decimal places, 
4.The hour hand of a clock is 77.0 mm long. How far does the tip of the hand travel between 2 o'clock and 7 o'clock? Report your answer in mm to 2 decimal places. 

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