Answer:
pi x² - 8pi x + 16pi
Explanation:
pi × (4 - x)²
pi × (16 - 8x + x²)
To find the area of the inner circle, we need to find its radius. Here, we can write the radius as 4 - x. Now, we can use the formula :
A = *
We can expand the square:
A =
Thus, the polynomial is .
Hope this helps!
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