Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

A rectangle with a perimeter of 126 units is the image of a rectangle that was dilated by a scale factor of 
(1)/(2). Find the perimeter of the preimage, the original rectangle, before its dilation. Round your answer to the nearest tenth, if necessary.
Answer: units

A rectangle with a perimeter of 126126 units is the image of a rectangle that was dilated by a scale factor of 12 \frac{1}{2} . Find the perimeter of the preimage, the original rectangle, before its dilation. Round your answer to the nearest tenth, if necessary.\newlineAnswer: units

Full solution

Q. A rectangle with a perimeter of 126126 units is the image of a rectangle that was dilated by a scale factor of 12 \frac{1}{2} . Find the perimeter of the preimage, the original rectangle, before its dilation. Round your answer to the nearest tenth, if necessary.\newlineAnswer: units
  1. Understand Relationship: To find the perimeter of the original rectangle, we need to understand the relationship between the perimeters of similar figures. The perimeter of a figure after dilation is proportional to the scale factor. Since the scale factor is 12\frac{1}{2}, the perimeter of the original rectangle would be twice the perimeter of the dilated rectangle.
  2. Calculate Original Perimeter: Calculate the perimeter of the original rectangle by multiplying the perimeter of the dilated rectangle by 22 (the reciprocal of the scale factor 12\frac{1}{2}).\newlinePerimeter of original rectangle = Perimeter of dilated rectangle ×2\times 2\newlinePerimeter of original rectangle = 126126 units ×2\times 2
  3. Perform Multiplication: Perform the multiplication to find the perimeter of the original rectangle.\newlinePerimeter of original rectangle = 252252 units

More problems from Scale drawings: word problems