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rinaspost122
@rinaspost122
November 2021
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Найти площадь треугольника
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juliono
Найдем площадь по формуле Герона:
p=(13+14+15)/2=21 см
S=√21(21-13)(21-14)(21-15)=√21×8×7×6=√7056=84 см²
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Answers & Comments
p=(13+14+15)/2=21 см
S=√21(21-13)(21-14)(21-15)=√21×8×7×6=√7056=84 см²