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Equations for Radius and Circumference Calculation

Learn how to calculate radius variations and convert between radius and x-coordinates. Find maximum value for an 8-bit integer and solve coding questions. Explore the earth's circumference approximation and GIS datum definition.

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Equations for Radius and Circumference Calculation

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  1. Equations • Equation to change the radius as we go around from 0 to 360 (0 to 2π) • Equation to convert from radius to x coordinate value

  2. What is the maximum value an 8-bit unsigned integer can hold? • 65536 • 32767 • 255 • 256 • 8 • 7

  3. What will x be after the following code is executed:x=4x=x*2+1 • 4 • 8 • 9 • 1 • Something else

  4. G_E_N_I_H • R W C E • M D O Y • V F W I • V E Y L

  5. What is the approximate circumference of the earth at the equator? • 40,000 km • 6,300 km • 25,000 miles • 12,300 km • A and C • B and D

  6. What is a datum (in GIS)? • The plural of data • Converts 3D data to 2D • References geographic data to the earth • A file format

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