You answer is 152
Step by step:
Divide it into 2 rectangles
1st rectangle 10x8=80
2nd rectangle 12x6=72
80+72=152
Https://us-static.z-dn.net/files/dc3/f0ec9f7df76333d2bb73cb3f50fa06ed.jpeg
Step-by-step explanation:

Where Z is set of integer.
Answer:
4.5 u
Step-by-step explanation:
There are many ways to do it, the most easier is this:
Area=(b*h)/2
Area of ABD = (3*3)/2 = 4.5 u
It would be 69 inches long m8