Предмет: Геометрия, автор: Artomka321

Диагональ прямоугольника равна 13 см,а одна из сторон 5 см.Найдите площадь и периметр прямоугольника
Пожалуйста помогите!!!)))

Ответы

Автор ответа: alek48

0

К примеру, дан прямоуг. АВСD
АВ=5 см, ВD - диагональ = 13 см.
Рассмотрим. треуг. АВD
АD = √169-25=12 см. (теорема Пифагора)
Теперь можем найти площадь периметр.
S=5·12=60 см²
Р=2(5+12)= 34 см.

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