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The problem asks for the weight of water contained in a volume of 2 meters by 3 meters by 20 centimeters, knowing that 1 cubic meter of water weighs 1000 kg.

### Step-by-step solution:

1. **Convert 20 centimeters to meters:**
   \[
   20 \, \text{cm} = \frac{20}{100} = 0.2 \, \text{meters}
   \]

2. **Calculate the volume of the water:**
   The dimensions are given as 2 meters by 3 meters by 0.2 meters.
   \[
   \text{Volume} = 2 \times 3 \times 0.2 = 1.2 \, \text{cubic meters}
   \]

3. **Determine the weight of the water:**
   Since 1 cubic meter of water weighs 1000 kg, the weight of 1.2 cubic meters of water is:
   \[
   \text{Weight} = 1.2 \times 1000 = 1200 \, \text{kg}
   \]

Thus, the correct answer is **1,200 kg**.

### Correct answer: 
\[
\boxed{1,200 \, \text{kg}}
\]

Would you like a more detailed explanation or have any other questions?

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Here are some additional related questions:
1. How would the weight change if the height of water was increased to 50 cm?
2. What would be the volume if the height was 1 meter instead of 20 cm?
3. How do you convert between different units of volume?
4. If the material was oil (which weighs less than water), how would the weight calculation change?
5. How does the density of water affect weight calculations in different scenarios?

**Tip:** Always ensure to convert all units to a consistent system (e.g., meters, kilograms) before performing volume and weight calculations.

A cubic meter of water weighs 1,000 kg. What is the weight of 2 meters by 3 meters by 20 centimeters of water?

Solve a real-world problem calculating the weight of water for a volume of 2 meters by 3 meters by 20 centimeters. Learn the key concepts of unit conversion and volume-weight relation for water, with a step-by-step explanation. Suitable for Grades 6-8.

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