Yards or feet would be your best bet it depends how big the barn is.
Hello!
To solve this you need to use the equation to find the area of a circle which is

A is area
r is radius
Solve both circles
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Circle 1

Square the number

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Circle 2
A =

Square the number

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Finding the answer
To get the answer you subtract the numbers

The difference is

which is about 62.83 units
Hope this helps!
Answer:
8/21 chance or 38.1%
Step-by-step explanation:
5 + 7 + 8 = 21
If the owner will take oneout of random theres an 8/21 chance he will pick out a 20 dollar bill.
1/2 divided by 5/8
1/2 x 8/5= 8/10= 4/5