Вопрос школьника по предмету Математика
Вычисли писмено площадь прямоугольного треугольника если его катеты равны.
1) 9.8 дм и 10.5 дм
2) 17.5 м и 240 см
3) 6.9 и т 72 дм
Ответ учителя по предмету Математика
1)S=1/2×9.8×10.5=51.45дм^2
2) 240см-2.4м
S=1/2×17.5×2.4=42м^2
3) скорее вчего в данных 6.9м
72дм-7.2м
S=1/2×6.9×7.2=24.84м^2
обратите внимание на ед.измерения в ответе.см, м, дм…..
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