Answer:

Step-by-step explanation:
Given
The x and y values
Required
The regression line equation
Because of the length of the given data, I will run the analysis using online tools, then analyze the result.
From the analysis, we have:


--- Sum of squares
--- Sum of products
The regression equation is calculated as:

Where:

So, we have:




So:
becomes

The answer is 240ft^2. The area of the square base is 64 ft and the area of all four triangles is 176ft.
It would rotate 360 degrees because 18 seconds is twice the amount of 9 seconds, so you need to multiply 180 by 2, which is 360, or one full rotation.
Answer:
24 cm² is the correct answer