Предмет: Математика, автор: vggduygu

если длины сторон прямоугольника 4 см и 2 см Измерь в миллиметрах и вычисли его периметр и площадь

Ответы

Автор ответа: horkovva

5

1 см=10 мм
4см=40мм
2см=20мм
Итак: периметр=(40+20)*2=120мм
площадь=40*20=800мм2

Автор ответа: sanchimaa2018

3

4СМ=40ММ
2СМ=20ММ
p=2(40+20)
P=120ММ
s=40*20
S=800ММ²

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