Предмет: Математика, автор: Dianafaks

обчислыть периметр н-кутникка кожна сторонаякого дорывнюе 5 см,якщо :1)н-5; 2)н-10; 3)н-78.

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Автор ответа: nafanya2014

0

Периметр - сумма сторон, сторона 5 см, всего сторон н, значит периметр равен 5н
1) если н=5, то Р=25 см 2) н=10, то Р=50 см; 3) н=78, то Р=390 см

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