How to find the length of a cylinder when u have volume and circumference

Answers

Answer 1

Answer: circumfernce=2pir
Vcylinder=lpir^2

so what you do is take circumference adnd solvefor r, then input that for r in Volume and solve for legnth

C=2pir
C/(2pi)=r
input
V=lpir^2
V=lpi(C/2pi)^2
V=lpi(c^2/(4pi^2))
V=l(c^2/4pi)
multiply both sides by (4pi)/(c^2) to clear fractio
(4piV)/(C^2)=legnth

basically if you know volume and circumference
legnth=(4pi tmes volume)/(circumference^2)

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In 2004, there were 10,649 commercial radio stations in the US. About 19.22% of these stations were devoted to country music. About how many country musicradio stations were there in 2004? PLEASE I AM DESPERATE.

Answers

There were about 2,047 countrymusic radio stations in the US in 2004.

What is a percentage?

The percentage means the required value out of 100.

It is calculated by dividing the required value by the total value and multiplying by 100.

The percentagechange is also calculated using the same method.

In percentage change, we find the difference between the values given.

Example:

Required percentage value = a

total value = b

Percentage = a/b x 100

We have,

To find the number of country music radiostations in 2004, we can multiply the total number of radio stations by the percentage of stations devoted to country music:

The number of country music radio stations.

= 10,649 x 0.1922

Using a calculator, we get:

Number of countrymusic radio stations ≈ 2,046.7

Rounding to the nearest whole number, we can conclude that there were about 2,047 country music radio stations in the US in 2004.

Thus,

There were about 2,047 countrymusic radio stations in the US in 2004.

Learn more about percentages here:

brainly.com/question/11403063

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i think the answer would be 5,405 country music radio stations

(3 1/2 - 9 3/4) divided by (-2.5)

Answers

Answer:

Step-by-step explanation:

Let's take the numerator first

3 1/2 - 9 3/4

Convert to improper fraction

7/2 - 39/4

Find the LCM

$(14 - 39)/(4)$

= -25/4

Now let's take the denominator

-2.5

Convert to fraction

-5/2

Combine the two parts of the fraction

-25/4 / (-5/2)

This becomes;

-25/2 * -2/5

= +5

A baker made 9 trays of cupcakes and 2 pans of brownies. Each cupcake tray makes 12 cupcakes, and each brownie pan makes 48 brownies. The baker estimates he made about 200 desserts in all. Is that a good estimate?