Final answer:The measurements arranged from longest to shortest are1000 yards, 1 x 10^11 nm, 0.01 km, and 50 inches, after converting all measurements into kilometers.Explanation:To arrange the measurements from longest to shortest, we first need to convert all the measurements into a common unit. In this case, let's convert everything into kilometers (km).0.01 km already is in kilometers, so we leave it as is.1 x 10^11 nanometers (nm) is equal to 0.1 km (since 1 km = 10^9 nm).50 inches (in) is equal to 0.00127 km (since 1 in = 0.0000254 km).1000 yards is equal to 0.9144 km (since 1 yard = 0.0009144 km).So, arranging from longest to shortest, we get:1000 yards (0.9144 km), 1 x 10^11 nm (0.1 km), 0.01 km, 50 in (0.00127 km).Learn more about Measurement Conversion here:brainly.com/question/29824090#SPJ3...

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