Find the surface area of the cylinder. Round your answer to the nearest tenth. radius is 6 ft height is 7 ft

Mathematics

1 answer:

almond37 [142]3 years ago

7 0

Answer:

490.1

Step-by-step explanation:

A=2πrh+2πr2=2·π·6·7+2·π·62≈490.08845

You might be interested in

Reduce the following fraction 25/55 Pls help quickly

Lina20 [59]

Answer:

5/11

Step-by-step explanation:

5 0

3 years ago

A random sample of 121 checking accounts at a bank showed an average daily balance of $280. The standard deviation of the popula

klasskru [66]

Answer:

False

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem

Sample of 121, which is higher than 30.

So we do not need to know anything about the shape of the distribution in order to make an interval estimate of the mean of all the account balances.

So the answer is False

8 0

4 years ago

The Better Baby Buggy Co. has just come out with a new model, the Turbo. The market research department predicts that the demand

andreyandreev [35.5K]

In this question, q is the number of buggies the company can sell in a month if the price is $p per buggy. The revenue should be number of buggies sold(q) multiplied by the price(p). The equation would be:

revenue= p * q
revenue= p * (-4p + 616)= -4p^2 + 616p

The maximum revenue should be in the peak of the graph. The calculation would be:
-4p^2 + 616p
-4*2 p^2-1 + 616*1 p^1-1=0
-8p + 616=0
8p= 616
p=77

Put p=77 in the revenue equation would result
revenue= -4p^2 + 616p
revenue= -4(77^2) + 616(77) = -23716 + 47432= $23716

7 0

4 years ago

(9x + 7) – (x + 3) What is the answer.

nata0808 [166]

Answer:

8x + 4

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Solve the following questions 1/6x + 2/3=1/4x-1/3

VladimirAG [237]