Answer:
2n + 11
Step-by-step explanation:
You can combine 4n and -2n.
You get 2n + 11
1 : you would use a graduated cylinder . 2 : , you would use a yard stick or maybe a ruler if you are not able to find one. You can also use a meter stick.
Answer:
2
Step-by-step explanation:

First, simplify the top and bottom separately:

Then, just divide:

Answer: I'll give you formula
Step-by-step explanation: circumference = 2 x π x radius
radius = diameter÷2 area = π × radius²