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3 years ago

The volume of a cylinder is 225pi in.Cubed and the height of the cylinder is 1 in. What is the radius of the? cylinder?

Mathematics

1 answer:

arlik [135]3 years ago

6 0

Answer:

Step-by-step explanation:

The formula of a volume of a cylinder:

$V=\pi r^2H$

r - radius

H - height

We have

$V=225\pi in^3\\\\H=1\ in$

Substitute:

$225\pi=\pi r^2(1)$ <em>divide both sides by π</em>

$225=r^2\to r=\sqrt{225}\\\\r=15\ in$

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3 years ago

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2 years ago

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Answer:

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Step-by-step explanation:

In this question expression that represents the kth term of a certain sequence is not written properly.

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Since the sequence is infinite and the formula to calculate the sum is represented by

$S=\frac{a}{1-r}$ [Here r is less than 1]

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Therefore, Sum of first 10 terms will lie between $\frac{1}{4}$ and $\frac{1}{2}$ .

Option D will be the answer.

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3 years ago