Answer:
your answer would be 1kg
Step-by-step explanation:
Answer:

Step-by-step explanation:

Answer:
3y2 + 8y
Step-by-step explanation:
3y2 + 6y + 2y
3y2 + 8y
Answer:
30 m
Step-by-step explanation:
You simply add the lengths of all the sides. 3 m is not needed for this.