Answer: Number 1 is 1/8
Number 2 is 11/5.
Number 3 is 1/15.
Number 4 is 1/16.
Step-by-step explanation: To get better at this use multiplication and division.
Answer: circumference = 2Πr²
Where r= 3
Π=3.14
Therefore Circumference = 2×3.14× 3²
= 2×28.26
Circumference=56.52
Formula:
Subtitute in 3 for r.
Solve and the answer is 28.26