Предмет: Математика, автор: KengoroCar

Одна сторона прямокутника на 5 см менша за другу. Периметр дорiвнює 50 см. Знайти сторони

прямокутника.

ДАЮ 50 БАЛОВ

Ответы

Автор ответа: OblivionFire
7

Ответ:

15 см; 10 см

Пошаговое объяснение:

Дано:

a=x;

b=x-5;

P=50 см

_________

Найти: а,b-?

Решение:

Р=2(a+b) → 2*(x+(x-5)) = 50; x+(x-5)=25; x+x-5=25; 2x-5=25; 2x=25+5; 2x=30; x=30/2; x=15 см = а → b = 15 - 5 = 10 см.

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