Предмет: Математика, автор: kristina022002

Дом имеет форму прямоугольного параллелепипеда.Длина и ширина дома по 20 м.Когда к дому пристроили веранду.длина дома стала равна 30 м.На сколько квадратных метров увеличилась площадь дома?Чему равна общая площадь дома,полностью с решением.спасибо!

Ответы

Автор ответа: простородитель

0

20м*20м=400 кв м

20мх30м=600 кв м

600-400=200 кв м(увеличилась)

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