Answer: I think it is 5 or 4
Answer:
i dont know the first one, but the answer to the second question is 28
Step-by-step explanation:
For the circumference, you actually multiply by 20 because of the formula πd = C [OR 2πr = C]. You meant to double the radius.
A pentagon only has one line of symmetry.
3, because when you both square and square root a value the two cancel each other out.
