3 years ago

What is the surface area of the cylinder?

Mathematics

1 answer:

loris [4]3 years ago

7 0

Each sides are equal so the answer 400 cubic in

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Find the % of change in the cost of gasoline from 1970 with $1.25 and 2010 with $2.75

sashaice [31]

The rate of change is 110 percent.

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4 years ago

webassign If a snowball melts so that its surface area decreases at a rate of 6 cm2/min, find the rate at which the diameter dec

drek231 [11]

Answer:

The answer is $\frac{3}{10\pi } cm/min$

Step-by-step explanation:

Assuming the snowball is a perfect sphere, then if A denotes the surface area and D the diameter then:

$A=4\pi r^{2} = 4\pi (\frac{D}{2} )^{2} =\pi D^{2}$

Differentiating wrt r we have:

$\frac{dA}{dD} =2\pi D$

We are told that $\frac{dA}{dt}= -6$ and we want to find $\frac{dD}{dt}$

By the chain rule we have:

$\frac{dA}{dD}=\frac{dA}{dt}.\frac{dt}{dD}=\frac{\frac{dA}{dt} }{\frac{dD}{dt} }$

∴ $2\pi D=-\frac{6}{\frac{dD}{dt} }$

∴ $\frac{dD}{dt}=-\frac{6}{2\pi D}$

When D=10 then

$\frac{dD}{dt} =-\frac{6}{10*2\pi } =-\frac{3}{10\pi }$

The sign (-) shows that the D is decreasing.

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3 years ago

Y=-x-5<br> what’s the answer

Elodia [21]

Answer:

5=-x-y

Step-by-step explanation:

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3 years ago

Read 2 more answers

How to divide 32 divided by 6582.Please show you work and rounded to the nearest whole dollar. Leave the remainder undivided.

AysviL [449]

As you can observe, the divisor, 6582, is greater than the dividend, 32. In this case, the answer is less than 1. Technically, the answer is $0 with a remainder of 6,582. However, I think the more logical question would be 6582 divided by 32. If so, the solution is as follows:

205
-------------------------
32 | 6582
- 64
------------------
18
- 0
---------------
182
- 160
----------
22

The answer is $205 with a remainder of 22.

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4 years ago

Simplify 5 to the power of three over 5 to the power of seven

Furkat [3]

Answer:

1/625, or 0.0016 is the answer.

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3 years ago