92,78,86,92,95,91 If jocelyn took a 7th test and raised the mean of her scores by exactly 1 point, what was the score on the 7th test?

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Ответ:

lattimore12

15.01.2021

Mathematics

ANSWER:

The height of the cylinder is 6 ft approximately.

SOLUTION:

Given, the volume of a right cylinder is 155.4 $\mathrm{ft}^{3}$

And, radius of the cylinder is 3 ft.

We need to find the height of cylinder.

We know that, volume of the cylinder = area of cross section $\times$ height

Here, cross section is circular. Hence we can rewrite above formula as,

volume = area of circle $\times$ height

$\begin{array}{l}{\text { Volume }=\pi \times(\text { radius })^{2} \times \text { height }} \\ {155.4=\pi \times 3^{2} \times \text { height }}\end{array}$

$\begin{array}{l}{\text { Height }=\frac{155.4}{9 \times \pi}} \\\\ {=\frac{155.4}{28.27}=5.94}\end{array}$

Hence, the height of the cylinder is 6 ft approximately.

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