Объяснение:
CD²=12²-10²=144-100=44
CD=¬44=2¬11
S=AD*CD=10*2¬11=20¬11
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Объяснение:
CD²=12²-10²=144-100=44
CD=¬44=2¬11
S=AD*CD=10*2¬11=20¬11