SOLUTION: A circle has a radius of 4 feet.what is the circumference of a bigger circle if the scale factor of the smaller to bigger is 4:9
Algebra ->
Circles
-> SOLUTION: A circle has a radius of 4 feet.what is the circumference of a bigger circle if the scale factor of the smaller to bigger is 4:9
Log On
Question 1073201: A circle has a radius of 4 feet.what is the circumference of a bigger circle if the scale factor of the smaller to bigger is 4:9 Answer by addingup(3677) (Show Source):
You can put this solution on YOUR website! small radius 4 feet
ratio 4:9, thus:
large radius 9
What is the circumference of a radius:
2r*Pi = circumference
2(9)*Pi = circumference
18*Pi = your answer, use your calculator. Use 3.1416 for Pi if your calculator doesn't have a key for it.
