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tdtwdgtduqgcggggc
30.09.2022 19:16

Шар бетіне тиісті C, D және Е нүктелері берілген және CD=7 cм, DE=8cм, CE=9 cм. Шардың центрінен CDE үшбұрыш жазықтығының центріне дейінгі қашықтық 1 см-ге тең болса, шар бетінің ауданын табыңыз.​

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Ответ:
alexandrapavlov1
06.09.2020 19:15

AO=1cм,

P=(7+8+9)=12

S=

RCDE=

OE2=AO2+AE2

OE=

S=4 R2S=4* =92,2

Объяснение:

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