Math Problem Statement

Look at the rectangle on the coordinate plane. It will be dilated using the rule (x,y)→(13x,13y) using the origin as the center of dilation.

What is the area of the rectangle after dilation?

_____square units

Solution

To determine the area of the rectangle after dilation, we first need to understand how dilation affects the area of shapes.

Steps:

  1. Understanding the Dilation Rule: The given dilation rule is (x,y)(13x,13y)(x, y) \to (13x, 13y). This means that the rectangle's dimensions (length and width) will be scaled by a factor of 13.

  2. Effect on Area: When a two-dimensional shape is dilated by a factor kk, its area is scaled by a factor of k2k^2. In this case, the dilation factor is 13, so the area will be scaled by 132=16913^2 = 169.

  3. Original Area: If you know the original area of the rectangle, the new area can be found by multiplying it by 169.

For example, if the original area of the rectangle is AorigA_{\text{orig}}, then the new area AnewA_{\text{new}} is: Anew=169×AorigA_{\text{new}} = 169 \times A_{\text{orig}}

Conclusion:

To get the exact area after dilation, I need to know the original area of the rectangle. Could you provide that, or should I assume a sample rectangle to calculate the new area for you?

Let me know how you’d like to proceed!

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Math Problem Analysis

Mathematical Concepts

Geometry
Dilations
Scaling of Areas

Formulas

Area scaling factor = k^2
A_new = 169 * A_orig

Theorems

Effect of Dilation on Area

Suitable Grade Level

Grades 7-9