Answer: b
Step-by-step explanation:
You know the formula of a triangle is: (base*height)/2
So: 4*8=32
32/2=16cm^2
Since its a parallelogram, you could say that there are two of these triangles, so: 16*2=32cm^2
Now we're left with the part in the middle. The sides are now 8 by 8 because we took away 4 from 12, so: 8*8= 64cm^2
Now you just add all your values together, so: 32+64=96cm^2
I believe you do 180 - 149 because it's a linear pair, it makes a t shape!!
Answer: h = 113°
Step-by-step explanation:
First, we will find the third angle of the top triangle
Which we can call x
43° + 24° + x = 180°
67° + x = 180°
x = 180° - 67°
x = 113°
Now, we can see that x and h are opposite angles
Which means x = h
113° = h
Given triangles are similar, so we setup a proportion
(140-x)/81 = x/9
solving gives x = 14
AC = 140-x = 140-14 = 126
It’s false, 17•6 actually = 102