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
2 answers:
Answer:
7.428 inches
Step-by-step explanation:
Answer : The radius of bowl is, 7.428 inches.
Step-by-step explanation :
As we are given that:
Depth of the bowl = D(r) = 0.145 r²
Given:
Depth of the bowl = D = 8 inches
Now put all the given values in the above expression, we get the radius of bowl.





Therefore, the radius of bowl is, 7.428 inches.
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Answer:
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