I got the answer 27.5, but I checked with the answer key and it says it’s 16.5, did I make a mistake or is the key wrong?

Answer:
A =16.5
Step-by-step explanation:
This is a triangle. I will assume we want to find the area
A = 1/2 bh
I will take the base as the right hand side
b = 11 units
h = It is the number of units from the base to the top of the triangle which is 3
A = 1/2 (11*3)
A = 1/2 * 33
A =16.5
Answer:
A = 1/2 bh
b = 11 units
h = 3
A = 1/2 (11*3)
A = 1/2 * 33
A =16.5
Step-by-step explanation: