breezy1999 breezy1999

08-05-2017
Mathematics

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r = 13.1 km., d = ? , C = ? a. d = 26.2 km, C = 82.31 km c. d = 6.55 km, C = 82.31 km b. d = 26.2 km, C = 41.15 km d. d = 6.55 km, C = 41.15 km

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Аноним Аноним

08-05-2017

answer is a. d = 26.2 km, C = 82.31 km

D = 2r = 2 x 13.1 = 26.2
C = 2pi r = 2 x 3.14159265359 x 13.1
C = 82.31

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