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3 years ago

If a cylinder has a height of 7 inches and a volume of 2908.33 in3 find its diameter

2 answers:

7 0

Heya user

We have over here -

Radius , r= ?

Height , h = 7 inch

Then volume ,= 2πrh

$volume \: \: = 2908.33 \\ \\ 2\pi \: rh \: \: = 2908.33 \\ \\ = > r \: \: = \frac{2908.33}{43.96} \\ \\ = > r \: \: = 64$
So we have Radius 64 approx

so , Diameter , = 128 inch

Makovka662 [10]3 years ago

3 0

The answer should be 23. Not sure if you have multiple choices, or have to show the work, but 23 is the answer.

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15 points!! Please help

Ivahew [28]

Answer:

3 feet

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

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VLD [36.1K]

6,561 is the correct answer

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3 years ago

Work out 10.3 % of 853.93 km Give your answer rounded to 2 DP.

Vilka [71]

Answer: 87.95

Step-by-step explanation: 10.3% of 853.93

10.3%= 0.103

So you would do 0.103 times 853.93=87.95479 round that to 2 Dp. You get 87.95

7 0

3 years ago

Country A has a growth rate of 4.9% per year. The population is currently 4 comma 151,000, and the land area of Country A is 1

kvv77 [185]

Answer:

There will be one person on 1 square yard of land after 1,892,147.588 years.

Step-by-step explanation:

Continuous exponential growth formula:

$P(t)=Pe^{rt}$

P(t)= Population after t years.

P= Initial population

r=rate of growth.

t= time in year

Given that,

Growth rate of country A (r)= 4.9% per year=0.049 per year.

Initial population (P)= 151,000.

Land area of country area= 14,000,000,000 square yards.

There will be one person on one square yard of land.

So, there will be 14,000,000,000 person for 14,000,000,000 square yard of land in country A.

P(t)=14,000,000,000 person

$\therefore 14,000,000,000= 151,000 e^{0.049t}$

$\Rightarrow e^{0.049t}=\frac{ 14,000,000,000}{ 151,000}$

Taking ln both sides

$\Rightarrow ln|e^{0.049t}|=ln|\frac{ 14,000,000,000}{ 151,000}|$

$\Rightarrow {0.049t}=ln|\frac{ 14,000,000,000}{ 151,000}|$

$\Rightarrow t}=\frac{ln|\frac{ 14,000,000,000}{ 151,000}|}{0.049}$

$\Rightarrow t}=1,892,147.588$ years

There will be one person for every square yard of land after 1,892,147.588 years.

7 0

3 years ago

Consider college officials in admissions registration, counseling, financial aid campus ministry, food services, and so on. How

andre [41]

Since sample size is > 40, we use the z-score in calculating for the confidence interval.

The formula is given as:

Confidence Interval = X ± z * σ / sqrt (n)

Where,

X = mean = $50,340

z = z-score which is taken from standard distribution tables at 90% confidence interval = 1.645

σ = standard deviation = $10,780

n = sample size = 45

Substituting to the equation:

Confidence Interval = 50,340 ± 1.645 * 10,780 / sqrt (45)

Confidence Interval = 50,340 ± 1,607

Confidence Interval = $48,733 to $51,947

<span>Therefore the salary range of the personnel is $48,733 to $51,947.</span>

5 0

4 years ago