We need 80 liters of 45% alcohol
We have 30% alcohol and 60% alcohol.
This is relatively easy. We need equal amounts of each.
There fore we mix 40 liters of 30% alcohol and 40 liters of 60% alcohol.
I believe to answer this question you would simply divide by 5 for the dimensions to get the size of the scale drawing, and given it is a drawing I can only assume it would be measured in inches, so the answer in my mind would be 24 by 15 inches. I hope this helped, have a nice day! :)
Answer:
first multiply 2x with 8

you see in down there is x common so take it as common

now we have x on top as well as in bottom cut them

here is answer
Answer: 137π
The usual formula for a circle centered at (a,b), with radius r,
(x - a)² + (y - b)² = r²
The area of the circle is πr², so 137π