1 answer
(click or scroll down)
If trapezoid QRST is dilated by a scale factor of 3.4, then all side lengths of the trapezoid will be multiplied by 3.4.
Let's say the original side lengths of the trapezoid QRST are a, b, c, and d.
After dilation, the corresponding side lengths will be 3.4a, 3.4b, 3.4c, and 3.4d.
The perimeter of the dilated trapezoid QRST will be the sum of these side lengths: 3.4a + 3.4b + 3.4c + 3.4d = 3.4(a + b + c + d).
The perimeter of the dilated trapezoid QRST is equal to 3.4 times the perimeter of the original trapezoid QRST.
Therefore, the correct answer is D) 3.4y units.