Get the answers you need at Westonci.ca, where our expert community is dedicated to providing you with accurate information. Discover comprehensive answers to your questions from knowledgeable professionals on our user-friendly platform. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

Square 1 has a side length of [tex]$x$[/tex], and Square 2 has a side length of [tex][tex]$y$[/tex][/tex]. Square 2 is formed by joining the midpoints of the sides of Square 1 in order. If [tex]$x=2$[/tex], find the ratio of the perimeter of Square 1 to the perimeter of Square 2.

A. [tex]2: 1[/tex]
B. [tex]1: 2[/tex]
C. [tex]1: \sqrt{2}[/tex]
D. [tex]2: \sqrt{2}[/tex]


Sagot :

Alright, let's start by analyzing the problem step-by-step.

Step 1: Perimeter of Square 1

Square 1 has a side length [tex]\( x = 2 \)[/tex].

- The perimeter [tex]\( P_1 \)[/tex] of a square is given by [tex]\( 4 \times \text{side length} \)[/tex].
[tex]\[ P_1 = 4 \times 2 = 8 \][/tex]

Step 2: Determining the Side Length of Square 2

Square 2 is formed by joining the midpoints of the sides of Square 1. When we join the midpoints of a square, the resulting shape is another square whose side is the length of the diagonal of the smaller squares formed by splitting Square 1 into four equal parts.

Visualize the smaller squares, each formed from half the sides of Square 1:
- The diagonal [tex]\( d \)[/tex] of each smaller square (which is the side length of Square 2) can be found using the Pythagorean theorem. Considering one of the smaller squares as having side [tex]\( \frac{x}{2} \)[/tex]:
[tex]\[ d = \sqrt{\left(\frac{x}{2}\right)^2 + \left(\frac{x}{2}\right)^2} = x \cdot \frac{1}{\sqrt{2}} \][/tex]

With [tex]\( x = 2 \)[/tex]:
[tex]\[ d = 2 \cdot \frac{1}{\sqrt{2}} = \frac{2}{\sqrt{2}} = \sqrt{2} \][/tex]

So, the side length [tex]\( y \)[/tex] of Square 2 is [tex]\( \sqrt{2} \)[/tex].

Step 3: Perimeter of Square 2

- The perimeter [tex]\( P_2 \)[/tex] of Square 2 is given by [tex]\( 4 \times \text{side length} \)[/tex].
[tex]\[ P_2 = 4 \times \sqrt{2} \approx 5.65685424949238 \][/tex]

Step 4: Ratio of the Perimeters of Square 1 to Square 2

Now, we need to find the ratio of [tex]\( P_1 \)[/tex] to [tex]\( P_2 \)[/tex]:
[tex]\[ \text{Ratio} = \frac{P_1}{P_2} = \frac{8}{4\sqrt{2}} = \frac{8}{4 \times 1.4142135623730951} = \frac{8}{5.65685424949238} \approx 1.4142135623730951 \approx \sqrt{2} \][/tex]

Thus, the ratio of the perimeter of Square 1 to the perimeter of Square 2 simplifies to [tex]\( \sqrt{2} \)[/tex], which corresponds to [tex]\(\boxed{1: \sqrt{2}}\)[/tex].

So, the correct answer is:
C. [tex]\(1: \sqrt{2}\)[/tex]