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3 years ago

V=pier^2h solve for r

Mathematics

1 answer:

ankoles [38]3 years ago

8 0

Answer:

r = √(V/πh)

Step-by-step explanation:

V=π*r^2*h solve for r

divide both sides by πh

V/πh = π*r^2*h/πh

Simplify

V/πh = r^2

so r = √(V/πh)

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In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

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The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.619 + 1.96\sqrt{\frac{0.619*0.381}{42}} = 0.766$

The 95% confidence interval for the proportion of water specimens that contain detectable levels of lead is (0.472,0.766).

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V=pie*r^2*h solve for r

V=pier^2h solve for r