Here's your answer, I hope you understand this. 30.9cm
-3 carpark (c)
When you go up 3 levels, you are at level 3 and then you go down 6 which is -3
Given the fact that AB≈AD, then 35 is also the angle measure of ADB. The sum of the angles of a triangle =180. 35+35=70. 180-70=110
X=110°