Which one of the following is not correct?

Options

A. 25 hundredths `=(25)/(100)`
B. 0.57 is the same as 0.5700
C. Area of a square of side 30 cm is the same as the area of a rectangle `4.5mxx0.2m`
D. 2009 mL - 2 L 9 mL

Answer

To solve the question, we need to analyze each of the given statements and determine which one is not correct.

### Step-by-Step Solution:

1. **Evaluate the First Statement:**
- The first statement is "25 hundredths equal to 25 upon 100."
- This is correct because 25 hundredths can be expressed as a fraction: \( \frac{25}{100} \).

2. **Evaluate the Second Statement:**
- The second statement is "0.57 equal to 0.5700."
- This is also correct. The trailing zeros after a decimal do not change the value of the number.

3. **Evaluate the Fourth Statement:**
- The fourth statement is "2009 ml equals to 2 litre and 9 millilitre."
- To verify this, we know that 1 litre equals 1000 millilitres. Thus, 2000 ml is 2 litres, and adding the remaining 9 ml gives us a total of 2009 ml. This statement is correct.

4. **Evaluate the Third Statement:**
- The third statement involves calculating the area of a square and a rectangle.
- The area of the square with side 30 cm is calculated as:
\[ \text{Area of square} = 30 \, \text{cm} \times 30 \, \text{cm} = 900 \, \text{cm}^2 \]
- For the rectangle, the dimensions are given as 4.5 m and 0.2 m. First, convert these to cm:
- \( 4.5 \, \text{m} = 450 \, \text{cm} \)
- \( 0.2 \, \text{m} = 20 \, \text{cm} \)
- Now, calculate the area of the rectangle:
\[ \text{Area of rectangle} = 450 \, \text{cm} \times 20 \, \text{cm} = 9000 \, \text{cm}^2 \]
- Comparing the areas, we find that 900 cm² (area of the square) is not equal to 9000 cm² (area of the rectangle).

### Conclusion:
The third statement is not correct because the area of the square and the area of the rectangle are not equal.

### Final Answer:
The statement that is not correct is the **third statement**.

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