A parabolic listening device is shaped such that the depth of the bowl depends on its radius and can be represented by the curve D(r) = 0.145r^2. What is the radius when the depth is 8 inches? Round to the nearest thousandth of an inch.

1) 4.417 inches
2) 5.252 inches
3) 7.428 inches
4) 20.505 inches

4.416 inchs'

Step-by-step explanation:

idk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do r selfidk o it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do elfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your selfidk you can do it your self

the first one, all those points on the line just make a strait line.

isn't it a pentagon? sense [3 (triangle) + 4 (rectangle)] - 2 (triangle and rectangle connected) = 5 (pentagon)