Предмет: Математика, автор: Аноним

найди площадь листа картона квадратной формы длина стороны которого 7 дм

Ответы

Автор ответа: Khalievakz

А ширина где? Чтобы узнать S, нужно длину умножить на ширину. А где ширина?

Автор ответа: Khalievakz

я просто сказала

Автор ответа: Khalievakz

потому что никто без ширины площадь не узнает

Автор ответа: Аноним

вот Luuna сделала молодец а ты тут чета пишешь

Автор ответа: Khalievakz

Автор ответа: luuna

у квадрата все стороны равны.

Автор ответа: luuna

a=7 дм
S=а²⇒ S=7²⇒ S=49 дм²

Автор ответа: luuna

а=длина стороны квадрата=7 дм

Автор ответа: Khalievakz

не правильно

Автор ответа: Аноним

да

Автор ответа: Аноним

s =7.7 s = 49 см

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