Предмет: Геометрия, автор: Аноним

плизззззззз с обьяснением!!

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Автор ответа: Chacka1998

0

S=1/2 а*в , где а - АС , в - ВС, АС= корень из 29^2 - 21^2=20
S=1/2 *20*21=210

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