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Alex777 [14]
3 years ago
15

A right cylinder has a radius of 5 and a height of 9. What is its surface area?​

Mathematics
1 answer:
harkovskaia [24]3 years ago
5 0

Answer:

B. 140π units²

Step-by-step explanation:

Surface area of a cylinder:

2πrh + 2πr²

2π(5)(9) + 2π(5²)

90π + 50π

140π

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If a patient dosage decrease by 25 milligram per day ,how much change will it be in a week?
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After one week it will be a total decrease of 175 milligrams
8 0
3 years ago
Read 2 more answers
A=9 inches, b=12 inches, c=, is the hypotenuse known or unknown?
s2008m [1.1K]
Unknown. C is the hypotenuse, but this problem is solvable.
5 0
3 years ago
A P E X
alexgriva [62]

Answer:

504

step by step : 14x18=252. 20x18=360. 18x18=324. 58x18=1044. 71x18= 1278. 36x18=648. 28x18=504.

Arrange the data in an ascending order and the median is the middle value. If the number of values is an even number, the median will be the average of the two middle numbers.

504

6 0
2 years ago
Help?<br>what do I do? Thanks x
Elena L [17]
The correct answer would be 3
6 0
3 years ago
A sample was taken of the salaries of four employees from a large company. the following are their salaries, in thousands of dol
Free_Kalibri [48]

For given sample of salaries of four employees, the variance of their salaries is: 26 thousands of dollars

The formula for the variance is,

S^2=\frac{\sum (x_i - \bar{x})^2}{n-1}

where,

S^2 = sample variance

x_i = the value of the one observation

\bar{x} = the mean value of all observations

n = the number of observations

For given question,

n = 4

First we find the mean of their salaries.

(33 + 31 + 24 + 36 ) / 4 = 31

So, \bar{x}=31

Using the formula for variance ,

S^2=\frac{(33-31)^2}{4-1}+\frac{(31-31)^2}{4-1}+\frac{(24-31)^2}{4-1}+\frac{(36-31)^2}{4-1}\\\\ S^2=\frac{4}{3}  + \frac{0}{3} + \frac{49}{3} + \frac{25}{3} \\\\S^2= \frac{4+49+25}{3}\\\\S^2=\frac{78}{3}  \\\\S^2=26

Therefore, for given sample of salaries of four employees, the variance of their salaries is: 26 thousands of dollars

Learn more about the variance here:

brainly.com/question/13673183

#SPJ4

7 0
2 years ago
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