Question: 3.14x1=

Answer: 3.14

==================================================

Question: 3.14x2=

Answer: 6.28

==================================================

Question: 3.14x3=

Answer: 9.42

==================================================

Question: 3.14x4=

Answer: 12.56

==================================================

Question: 3.14x5=

Answer: 15.70

==================================================

Question: 3.14x6=

Answer: 18.84

==================================================

Question: 3.14x7=

Answer: 21.98

==================================================

Question: 3.14x8=

Answer: 25.12

==================================================

Question: 3.14x9=

Answer: 28.26

==================================================

Question: 3.14x12=

Answer: 37.68

==================================================

Question: 3.14x15=

Answer: 47.10

==================================================

Question: 3.14x16=

Answer: 50.24

==================================================

Question: 3.14x25=

Answer: 78.50

==================================================

Question: 3.14x36=

Answer: 113.04

==================================================