math problem help me plz

Answer:
1. 6.28 centimeter
2. 25.12 feet
3. 47.1 inches
Step-by-step explanation:
1. 2 x 3.14 or π = 6.28 centimeter
2. 4 x 2 = 8 x 3.14 = 25.12 feet
3. 15 x 3.14 = 47.1 inches
Hope It Helps :)