Предмет: Математика, автор: 12486

На сколько процентов увеличится площадь квадрата, если длину каждой стороны увеличть на 30 % ?
Какое решение и ответ?

Ответы

Автор ответа: pashapanov2005
0
1) 30%=0,3части  Sкв = а*а или а^2.
Стороны квадрата: 1см *1см =1см2,
Стороны увеличиваем на 0,3; ( 1+0,3)*(1+0,3)=1,3*1,3=1,69 см2
Площадь увеличилась на 0,69 части или 69%.
Ответ : при увеличении сторон квадрата на 30 % , его площадь увеличится на 69%.
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