Предмет: Геометрия, автор: vttlrrrr

З вершини А прямокутника АВСD опущено перпендикуляр АК на діагональ BD. Знайди довжину діагоналі АС, якщо АК = 12 см і ВК:КD = 4:9.

ТЕРМІНОВО, БУДЬ ЛАСКАА

Ответы

Автор ответа: jokerxxx884

2

Ответ:

Объяснение:

AK=h=BK*KD=12*12=144

BK=144/KD

BK=KD*4/9

144/KD=KD*4/9, KD=18

BK=8

BD=AC=BK+KD=26cm

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