Step-by-step explanation:
if you're looking for x
x=180-42-51= 87°
and if you're looking for D
D= 180-42= 138°
Perimeter= 2 ( length + width)
2×(12+6)
2×18
=36
Answer:
I think the answer is c but I didn’t simplify bc I don’t know what you mean
Step-by-step explanation: