30 points and brainliest!! Please answer this question!
Answer:
The original triangle has side length 7 cm
Step-by-step explanation:
equilateral triangle has side length x
scaled equilateral triangle
side length 4x
= 28
28 = 4 x
divide by 4
28/4 =4x/4
7 =x
The original triangle has side length 7 cm