lashaaungas
23.10.2020 •
Mathematics
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
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