A rectangle with a perimeter of 126 units is the image of a rectangle that was dilated by a scale factor of 21. Find the perimeter of the preimage, the original rectangle, before its dilation. Round your answer to the nearest tenth, if necessary.Answer: units
Q. A rectangle with a perimeter of 126 units is the image of a rectangle that was dilated by a scale factor of 21. Find the perimeter of the preimage, the original rectangle, before its dilation. Round your answer to the nearest tenth, if necessary.Answer: units
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 21, the perimeter of the original rectangle would be twice the perimeter of the dilated rectangle.
Calculate Original Perimeter: Calculate the perimeter of the original rectangle by multiplying the perimeter of the dilated rectangle by 2 (the reciprocal of the scale factor 21).Perimeter of original rectangle = Perimeter of dilated rectangle ×2Perimeter of original rectangle = 126 units ×2
Perform Multiplication: Perform the multiplication to find the perimeter of the original rectangle.Perimeter of original rectangle = 252 units