Finding the Original Dimensions

Oct 13, 2025 by windailys.com 42 views

Introduction

In geometry, dilation is a transformation that changes the size of a figure. When a figure is dilated by a factor, its area is affected in a specific way. In this article, we will explore how dilation affects the area of a rectangle, specifically when the original area is $$\frac{4}{7} , m^2$$ and the dilation factor is 7.

Understanding Dilation

Dilation is a transformation that changes the size of a figure by a certain scale factor. When a figure is dilated by a factor of k, its area is multiplied by k^2. This means that if the original area of a rectangle is A, the area of the dilated rectangle will be k^2A.

The Original Rectangle

The original rectangle has an area of $$\frac{4}{7} , m^2$$. To understand the effects of dilation, we need to find the original dimensions of the rectangle. Let's assume that the length of the rectangle is l and the width is w. Then, the area of the rectangle is given by A = lw.

Finding the Original Dimensions

Since the area of the original rectangle is $$\frac{4}{7} , m^2$$, we can set up the equation:

\frac{4}{7} = lw

To find the original dimensions, we need to find the values of l and w. However, we are not given any information about the length and width of the rectangle. We can, however, express the area in terms of the length and width.

Expressing the Area in Terms of Length and Width

We can express the area of the original rectangle in terms of the length and width as follows:

A = lw

\frac{4}{7} = lw

The Dilation Factor

The dilation factor is 7. This means that the length and width of the rectangle will be multiplied by 7.

The Dilated Rectangle

When the rectangle is dilated by a factor of 7, its area will be multiplied by 7^2 = 49.

Finding the Area of the Dilated Rectangle

To find the area of the dilated rectangle, we need to multiply the original area by the dilation factor squared.

A_{dilated} = 49 \times \frac{4}{7}

A_{dilated} = 28

Conclusion

In this article, we explored how dilation affects the area of a rectangle. We found that when a rectangle is dilated by a factor of 7, its area is multiplied by 7^2 = 49. We then used this information to find the area of the dilated rectangle, which is 28 $$, m^2$$.

Final Answer

Introduction

In our previous article, we explored how dilation affects the area of a rectangle. We found that when a rectangle is dilated by a factor of 7, its area is multiplied by 7^2 = 49. In this article, we will answer some frequently asked questions about dilation and its effects on the area of a rectangle.

Q&A

Q: What is dilation?

A: Dilation is a transformation that changes the size of a figure by a certain scale factor. When a figure is dilated by a factor of k, its area is multiplied by k^2.

Q: How does dilation affect the area of a rectangle?

A: When a rectangle is dilated by a factor of k, its area is multiplied by k^2. This means that if the original area of a rectangle is A, the area of the dilated rectangle will be k^2A.

Q: What is the dilation factor?

A: The dilation factor is the scale factor by which the figure is dilated. In our previous article, the dilation factor was 7.

Q: How do I find the area of a dilated rectangle?

A: To find the area of a dilated rectangle, you need to multiply the original area by the dilation factor squared.

Q: What if the original area is a fraction?

A: If the original area is a fraction, you can multiply the numerator and denominator by the dilation factor squared to get the area of the dilated rectangle.

Q: Can I dilate a rectangle by a fraction?

A: Yes, you can dilate a rectangle by a fraction. However, the area of the dilated rectangle will be multiplied by the square of the fraction.

Q: What if I dilate a rectangle by a negative factor?

A: If you dilate a rectangle by a negative factor, the area of the dilated rectangle will be negative. However, this is not a valid result in geometry, as areas cannot be negative.

Q: Can I dilate a rectangle by a factor of 0?

A: No, you cannot dilate a rectangle by a factor of 0. This would result in an area of 0, which is not a valid result in geometry.

Conclusion

In this article, we answered some frequently asked questions about dilation and its effects on the area of a rectangle. We hope that this article has helped you to understand the concept of dilation and how it affects the area of a rectangle.

Final Answer

The final answer is: $\boxed{28}$