Answer:
<h2>12</h2>
Step-by-step explanation:

Answer:
a is the correct answer
Step-by-step explanation:
-6-(-3)
-6+3
-3
Answer:
unit
Step-by-step explanation:
Since Here Δ ABC is a isosceles triangle.
Also,
and
Thus, ∠ ADH = 90°
That is, Δ ADH is the right angle triangle.
In which, AD = a unit and HD = b unit
And, By the definition of Pythagoras theorem,

⇒ 
⇒ 
Since, the perimeter of a triangle = sum of the all sides of the triangle.
Therefore, perimeter of ΔADH = AD + DH + AH
=
unit
Answer:
c
Step-by-step explanation: