Multiply by 0.4 on both sides to cancel the original 0.4 and change the 10
Answer:
here is your answer in the picture..
Answer:


Step-by-step explanation:
Since we believe it
The number sequence is that those which can be described as
and that is not ending and recurring. Figures that are unreasonable are also the ones, that are not
and therefore are non-ending, non-recurring.
The number sequence is 
Rational amount since it is classified as
.
is really a rational number.
is a real function, since it does not end but repeats it.
The rational number 
Unreasonable number
.
To find r, you need to isolate it. pi*r^2*60=18,840. divide 18,840 by 60, then pi, it comes out at 100. Now find the square root to get 10
r=10