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2 years ago

Calculate the surface area of each solid with explanation

Mathematics

1 answer:

juin [17]2 years ago

6 0

Answer:

602.88

Step-by-step explanation:

The two lids

Area = pi * r^2

d = 12

r = d/2

r = 12/2

r = 6 cm

Area = 3.14 * 6^2

Area = 3.14 * 36

Area = 113.04

Both Lids = 226.08

Cylinder Body

Circumference = 2*pi*r*h

Circumference = 2*3.14 *6 * 10 <u> 376.8</u>

Total Area = 602.88

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The confidence limits for the proportion that plan to vote for the Democratic incumbent are 0.725 and 0.775.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

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Of the 500 surveyed, 350 said they were going to vote for the Democratic incumbent.

This means that $n = 500, \pi = \frac{350}{500} = 0.75$

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So $\alpha = 0.2$ , z is the value of Z that has a pvalue of $1 - \frac{0.2}{2} = 0.9$ , so $Z = 1.28$ .

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2 years ago

Calculate the surface area of each solid with explanation ​

Calculate the surface area of each solid with explanation