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3 years ago

What is the area of the lateral surface of the following cylinder?

Mathematics

2 answers:

Katyanochek1 [597]3 years ago

7 0

B is correct answer :)

NikAS [45]3 years ago

4 0

Surface Area = (2 • π • r²) + (2 • π • r • height)

(2 • π • r²) is surface area of the "ends"

(2 • π • r • height) is lateral area

Lateral Area = 2 * PI * 2 * 7

Lateral Area =28 * PI =

87.9645943005 square inches 
Answer is B

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Whoever responds first will get marked best!!!!!The Garcia family is driving from 3,272 miles from San Diego, CA ot Bar Harbor,

mojhsa [17]

Answer:

Step-by-step explanation:

We know that in 5 days they have travelled 2045 miles. This means that their per day average for travel is 2045/5=409 miles per day.

Now the distance left is 3272-2045=1227 miles.

And if we divide the average miles with the miles left, it gives us= 1227/409

So, the total time taken for travel will be= 5+3=8 days

I guess this is the way to do it.

8 0

3 years ago

Read 2 more answers

What is 5/10 = x/100

Monica [59]

Answer:

= 50

Step-by-step explanation:

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3 years ago

Read 2 more answers

The average monthly cell phone bill was reported to be $50.07 by the U.S. Wireless Industry. Random Sampling of a large cell pho

zalisa [80]

Answer:

The null and alternative hypotheses are:

$H_{0}:\mu= 50.07$

$H_{a}:\mu>50.07$

Under the null hypothesis, the test statistic is:

$t=\frac{\bar{x}-\mu}{\frac{s}{\sqrt{n}} }$

Where:

$\bar{x} = 52.86$ is the sample mean

$s=7.0132$ is the sample standard deviation

$n=10$ is the sample size

$\therefore t=\frac{52.86-50.07}{\frac{7.0132}{\sqrt{10}} }$

$=1.26$

Now, the right tailed t critical value at 0.05 significance level for df = n-1 = 10-1 = 9 is:

$t_{critical}=1.833$

Since the t statistic is less than the t critical value at 0.05 significance level, therefore,we fail to reject the null hypothesis and conclude that there is not sufficient evidence to support the claim that the average phone bill has increased.

4 0

3 years ago

If I start a road trip with 10,425 miles on my auto meter and I end it with 23,840 miles showing how many miles was my trip

denis23 [38]

Answer:

13,415 miles

Step-by-step explanation:

Final position - initial position = Miles traveled:

23,840 miles - 10,425 miles = 13,415 miles

3 0

3 years ago

the fourth term of an arithmetic sequence is 141, and the seventh term is 132. what is the first term?

Cerrena [4.2K]

The 1st, 4th, and 7th terms make an arithmetic sequence of their own. The 4th term is the average of the 1st and 7th, so ...
(1st +7th)/2 = 4th
1st + 7th = 2×4th
1st = 2×4th - 7th

The first term is ...
2*141 - 132 = 150

7 0

3 years ago