Find the areas of the rectangles whose sides are :
3 cm and 4 cm

Answer

To find the area of a rectangle with sides measuring 3 cm and 4 cm, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Length and Breadth**:
- We have two sides of the rectangle: 3 cm and 4 cm.
- Let's take the length as 4 cm and the breadth as 3 cm.

2. **Use the Formula for Area of a Rectangle**:
- The formula to calculate the area of a rectangle is:
\[ \text{Area} = \text{Length} \times \text{Breadth} \]

3. **Substitute the Values into the Formula**:
- Now, substitute the values we identified:
\[ \text{Area} = 4 \, \text{cm} \times 3 \, \text{cm} \]

4. **Perform the Multiplication**:
- Calculate the multiplication:
\[ \text{Area} = 12 \, \text{cm}^2 \]

5. **State the Final Answer**:
- Therefore, the area of the rectangle is:
\[ \text{Area} = 12 \, \text{cm}^2 \]