Автор - gesfun99

геометрия
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Ответ

Автор - belskaya56

MK = 13

MP = PK = MK2 = 132 = 6,5

L K = 1803 = 60 град. ------> L KPR = 90 - 60 = 30 град.    =>

KR = PK2 = 6,52 = 3,25 ------> NR = NK - KR = 13 - 3,25 = 9,75

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