Answer:

Step-by-step explanation:
To find the reciprocal, divide 1 by the number given'

<em> (if you can't see it, it is 1 over 5/9)</em>
<em />
Simplify;
Multiply the numerator by the reciprocal of the denominator.

<em> (if you can't see it, it is 1 × 5/9)</em>
<em />
Multiply
by 1.

<em />
So our answer is
!
We did it!
Answer: 27
Step-by-step explanation:
use the formula for the area of circle and solve for r: A=pi r^2
2290.221=pir^2 <---divide by pi
729=r^2 <--- square root both sides
27=r
Divide each by 12 to get its speed for one minute. 3,600/12=300 12/12=1. It is going 300?? in 1 minute. Hope this helped!