Answer:
2
Step-by-step explanation:
3x+15=21 (the opposite side of parallelogram is equal)
3x=21-15
3x=6
x=6/3
so x=2
AD=2
Answer:
954.07 square inches
Step-by-step explanation:
You multiply all the mesurements together.
Answer:
I wish I could help you but I havent learned any of that.
Step-by-step explanation: