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2 years ago

Find the lateral surface area of a

Mathematics

1 answer:

balandron [24]2 years ago

5 0

Answer:

15.1 mm²

Step-by-step explanation:

Lateral surface area of a cylinder = 2πrh

(where r is the radius and h is the height)

Given:

r = 1.2 mm
h = 2 mm

Substitute given values into the formula:

⇒ Lateral surface area = 2π(1.2)(2)

= 4.8π

= 15.1 mm² (nearest tenth)

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castortr0y [4]

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3 years ago

Fast i need it thanks

Troyanec [42]

Answer:

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1 year ago

A cereal box has a height of 32 cm. The base has 160 square cm what is the volume in cubic cm of the box

ruslelena [56]

Hello There!

All you really need to do is multiply 160 with 32.

$160$ × $32$ ≈ $5120$

5120 cm

Hope this helped!

7 0

3 years ago

Read 2 more answers

A random sample of 16 statistics examinations was taken. The average sample score was 76.2 with a sample variance of 144. The 99

dlinn [17]

99% confidence interval for the population average examination score is between a lower limit of 67.35 and an upper limit of 85.05. The correct option is C.

<h3>What is the margin of error in statistics?</h3>

The margin of error is a statistic that describes how much random sampling error there is in survey results. One should have less faith that a poll's findings would accurately reflect those of a population census the higher the margin of error.

The interval will be calculated as below:-

Confidence interval = mean +/- margin of error (E)

mean = 76.2

variance = 144

sd = sqrt(variance) = sqrt(144) = 12

n = 16

Degree of freedom (df) = n - 1 = 16- 1 = 15

Confidence level (C) = 99% = 0.99

Significance level = 1 - C = 1 - 0.99 = 0.01 = 1%

t-value corresponding to 15 df and 1% significance level is 2.95

The margin of error will be:-

E = t×sd/√n = 2.95 × 12/√16 = 8.85

The interval will be:-

Lower limit = mean - E = 76.2 - 8.85 = 67.35

Upper limit = mean + E = 76.2 + 8.85 = 85.05

Therefore, the 99% confidence interval for the population average examination score is between a lower limit of 67.35 and an upper limit of 85.05. The correct option is C.

To know more about margin of error follow

brainly.com/question/24289590

#SPJ1

4 0

2 years ago

Multiply the equation 2x+2y=8 by 3. Does the equation have the same solution set?

stepan [7]

Multiply the equation:

$2x+2y=8 \mapsto 6x+6y=24$

The solution set is the same, because multiplying both sides of an equation by a non-zero number doesn't change the solution set. In fact, if you rewrite the equation as

$2x+2y-8=0$

Multiplying this by 3 (or whatever number, for all it matters) gives

$3(2x+2y-8)=0$

Now, a product is zero if and only if at least one of the factor is zero. So, either $3=0$ or $2x+2y-8=0$

Since the first is clearly impossible, the second one must be true, which is the original equation.

3 0

3 years ago