Предмет: Математика, автор: mudetygyru20122009

Прямокутний паралелепіпед виготовлений зі скла. Довжина його 45 дм, ширина на 15 дм менша,а висота дорівнює 12 дм. Знайти масу паралелепіпеда, якщо маса 1 см³ скла - 3г.

Ответы

Автор ответа: ark2011
0

ДАНО:

a = 45 дм - длина

b = 45 - 15 = 30 дм - ширина

c = 12 дм - высота

Вычисляем объем по формуле:

V =a*b*c = 45*30*12 = 45*360 = 16200 дм³ - объем.

Вычисляем массу по формуле:   (ro = 3 г/см³ = 3000 г/дм³ = 3 кг/дм³)

M = ro*V = 3 (кг/дм³) * 16200 (дм³) = 48600 кг = 48,6 т - масса -

В единицах длины в системе СИ.

V = 4.5 *3 * 1.2 = 16.2 м³

ro = 3 г/см³ = 3000 кг/м³ = 3 т/м³

M = ro*V = 3 * 16.2 = 48.6 т

ответ:48.6 т


dashashapoval1990: ето за какой класс?
Автор ответа: dlolz404ons
0

дано:
a = 45 дм - длина

b = 45 - 15 = 30 дм - ширина

c = 12 дм - высота

Вычисляем объем по формуле:

V =a*b*c = 45*30*12 = 45*360 = 16200 дм³ - объем.

Вычисляем массу по формуле:   (ro = 3 г/см³ = 3000 г/дм³ = 3 кг/дм³)

M = ro*V = 3 (кг/дм³) * 16200 (дм³) = 48600 кг = 48,6 т - масса -

В единицах длины в системе СИ.

V = 4.5 *3 * 1.2 = 16.2 м³

ro = 3 г/см³ = 3000 кг/м³ = 3 т/м³

M = ro*V = 3 * 16.2 = 48.6 т

ответ:48.6 т


mudetygyru20122009: А це за який клас?
dashashapoval1990: рил ето за какой клас?
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