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3 years ago

Find the Surface Area of a cylinder with a base radius of 2 cm and a height of 3 cm. Use pi = 3.14

Mathematics

2 answers:

Roman55 [17]3 years ago

7 0

$S=2\pi r(r+h)\\
S=2\cdot3.14\cdot2\cdot(2+3)\\
S=12.56\cdot5\\
S=62.8\ cm^2$

Oksi-84 [34.3K]3 years ago

5 0

$A_S=2\pi r^2+2\pi rH\\\\r=2cm;\ H=3cm\\\\A_S=2\pi\cdot2^2+2\pi\cdot2\cdot3=2\pi\cdot4+2\pi\cdot6=8\pi+12\pi=20\pi\ (cm^2)\\\\20\pi\approx20\cdot3.14=62.8\ (cm^2)$

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<h3>What echo number is a perfect square</h3>

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The <em>echo</em> number 20222022202220222022 is the <em>perfect</em> square of 4496890281. $\blacksquare$

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3 years ago

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3 years ago

Which of the following could be the graph of 3x + 4y = 12?

Elan Coil [88]

Answer:

A graph that goes through (4, 0), (8, -3), (0, 3), and (-4, 6)

Step-by-step explanation:

Hello!

To find what this looks like it is easier to put it into slope-intercept form which is y = mx + b

To get our equation to look like that we have to get y by itself

3x + 4y = 12

Subtract 3x from both sides

4y = -3x + 12

Divide both sides by 4

$y =- \frac{3}{4}x + 3$

We now know the y-intercept is (0, 3)

Now we follow the slope to give us more points

More points are (4, 0), (8, -3), and (-4, 6)

The answer would be a graph that goes through those points.

Hope this helps!

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3 years ago

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garik1379 [7]

The complete question is

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<h3>What is the formula for Discriminant?</h3>

The formula for finding the discriminant is

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