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3 years ago

PLEASE HELP!!!

Mathematics

1 answer:

Zanzabum3 years ago

6 0

Answer:

Step-by-step explanation:

its not B

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Do it yourself

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3 years ago

Read 2 more answers

(I need the work too please!)

Sunny_sXe [5.5K]

Answer:

I am not sure if this was the correct method to solve the question, however it gives the right results if you check it.

Step-by-step explanation:

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3 years ago

Use differentials to estimate the amount of material in a closed cylindrical can that is 60 cm high and 24 cm in diameter if the

alexira [117]

Answer:

$dV=542.9 cm^{3}$

Step-by-step explanation:

Let's start with the equation of the volume of a cylinder:

$V=\pi r^{2}*h$

Where:

r is the radius of the cylinder (r=D/2=24/2=12 cm)
h is the high of the cylinder (h = 60 cm)

We can us partial derivatives to find the differential of this volume. So we will have:

$dV=\frac{\partial V}{\partial r}dr+\frac{\partial V}{\partial h}dh$ (1)

Now:

$\frac{\partial V}{\partial r}=2\pi r*h=2\pi 12*60=4523.9 cm^{2}$

$\frac{\partial V}{\partial h}=\pi 12^{2}=452.4 cm^{2}$

dr is a differential of the radius, so in our case it is 0.1 cm and dh, differential of the high, is 0.1*2 cm. We multiply by 2 because we need to consider the top and the bottom of the cylinder.

Now we just need to put all of this definitions in the equation (1).

$dV=4523.9*0.1+452.4*0.2=542.9 cm^{3}$

I hope it helps you!

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4 years ago

Using the product property of square roots what is the square root of 28 and 150

Svetllana [295]

I assume you need find out √28=√7*4=2√7
√150=√5*5*6=5√6
hope it helps

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4 years ago