Answer:
56.52 inches
Step-by-step explanation:
The circumference of a circle can be found using:

We know the diameter is 18, and
is being rounded to 3.14, so we can substitute them in.
c=3.14*18 <em>Multiply</em>
c=56.52
So, the circumference is 56.52 inches
Answer:
k ≥ -18
Step-by-step explanation:

Add subtraction multiplication and division
The first board is approximately 0.45 the second board is approximately 0.9 and the third board is approximately 19.8
Answer:
433.13
Step-by-step explanation: