Answer:
Step-by-step explanation:
Alright, lets get started.
The given two sides are AB = 10
CD = 10
It means a is 10 and b is 10.
The height h is given as 8.
The formula of area of trapezoid = 
Plugging the values of a,b and h in the formula:
area = 
area = 
area = 
Hence the area is 80 units : Answer B
Hope it will help :)