Question

Бак длиной 1 м, шириной 70 см, глубиной 50 см наполнен водой. Найди массу вода, если масса 1 дм3 вода равна 1 кг

Answer 1

Находим объем бака со сторонами 
a = 1 м = 10 дм, b = 70 см = 7 дм и с = 50 см = 5 дм. 
для удобства в кубических дециметрах.
V = a*b*c = 10 * 7 *5 = 350 дм^3 = 350 литров
Масса воды, которая может поместиться в этом  
М =r*V = 1 кг/дм^3 * 350 дм^3 = 350 кг.
ОТВЕТ: Масса воды 350 кг.

Answer 2

Calculation of the Mass of Water in the Tank

To find the mass of water in the tank, we need to calculate the volume of water first and then multiply it by the density of water.

Given: - Length of the tank (L) = 1 m - Width of the tank (W) = 70 cm = 0.7 m - Depth of the tank (D) = 50 cm = 0.5 m - Density of water = 1 kg/dm³

Calculation of Volume of Water

The volume of water can be calculated using the formula:

Volume = Length × Width × Depth

Substituting the given values:

Volume = 1 m × 0.7 m × 0.5 m

Calculating the volume:

Volume = 0.35 m³

Calculation of Mass of Water

The mass of water can be calculated by multiplying the volume of water by the density of water:

Mass = Volume × Density

Substituting the values:

Mass = 0.35 m³ × 1 kg/dm³

Converting m³ to dm³:

1 m³ = 1000 dm³

Mass = 0.35 m³ × 1000 dm³/m³ × 1 kg/dm³

Calculating the mass:

Mass = 350 kg

Therefore, the mass of water in the tank is 350 kg.