Algebra 2 - do not guess! explain your answer : )

how far does the barnacle travel in one revolution of the water wheel?

just the last question in the picture ^^ i got the other two! this question is very confusing and i forget how to do it so some would be great : ,)

will report any random guesses**

The travel of the barnacle would be the circumference of the circle.

Circumference formula is 2 x PI x r

Circumference  = 2 x PI x 1m

= 2 x PI

If you use 3.14 for PI the circumference is 2 x 3.14 = 6.28 m.

Round the answer as needed.

definition: a circle is the  set of all points in a plane that are equidistant  from a given  point  called the center of the circle. we use the symbol ⊙ to represent a circle. the a line segment from the center of the circle to  any point  on the circle is a radius of the circle.

step-by-step explanation:

i googled it and this is what i got i don't know how it is. sorry.

correct answer:

i^31 = -i