The answer is 12. This seems like a calculator job
Let R be the greater radius and r be the smaller radius
A) Area of the sidewalk = R^2 - r^2 - This can be the expression
B) = 3.14
=(R^2-r^2)
=(11^2-9^2)
=(121-81)
=*40
That was the simplified expression
Answer = 3.14 * 40 = 125.6m^2
Hope you could understand.
If you have any query, feel free to ask.
Answer:
THE ANSWER IS C
Step-by-step explanation:
Answer:
where is the table
Step-by-step explanation: