Pls help me on the answer pls help

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.

The scatterplot represents the total fee for hours renting a bike. the line of best fit for the data is y = 6.855x + 10.215. which table shows the correct residual values for the data set?