Предмет: Геометрия, автор: юлия840

найдите площадь прямоугольного треугольника, гипоьенуза которого равна 13см, а один из катетов 5 см

Ответы

Автор ответа: kirichekov

0

прямоугольный треугольник: c=13 см, a=5 см, b=?
по теореме Пифагора: c²=a²+b²
13²=5²+b², b=12 см
SΔ=(a*b)/2
SΔ=(5*12)/2
SΔ=30 см²

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