Answer:
AB = 7, BC = 7 and AC = 11
Step-by-step explanation:
Let AB = BC = a and CA = b
Now, given that the perimeter of the triangle is 25.
So, 2a + b = 25 ............ (1)
And 4 is the difference between the two unequal sides.
Hence, b - a = 4 .............. (2)
⇒ 2b - 2a = 8 ........... (3)
Now, solving equations (1) and (3) we get, 3b = 25 + 8 = 33
⇒ b = 11
Hence, from equation (2) we get a = b - 4 = 7
Therefore, AB = 7, BC = 7 and AC = 11 (Answer)
