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3 years ago

Pleaseeee help meee☹️

Mathematics

2 answers:

VashaNatasha [74]3 years ago

7 0

The answer is two :))))

OLEGan [10]3 years ago

5 0

For the future juts use demos it's way faster

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The volume of a cone of radius r and height h is given by V=πr²h³. If the radius and the height both increase at a constant rate

Aloiza [94]

Answer:

The volume of cone is increasing at a rate 1808.64 cubic cm per second.

Step-by-step explanation:

We are given the following in the question:

$\dfrac{dr}{dt} = 12\text{ cm per sec}\\\\\dfrac{dh}{dt} = 12\text{ cm per sec}$

Volume of cone =

$V = \dfrac{1}{3}\pi r^2 h$

where r is the radius and h is the height of the cone.

Instant height = 9 cm

Instant radius = 6 cm

Rate of change of volume =

$\dfrac{dV}{dt} = \dfrac{d}{dt}(\dfrac{1}{3}\pi r^2 h)\\\\\dfrac{dV}{dt} = \dfrac{\pi}{3}(2r\dfrac{dr}{dt}h + r^2\dfrac{dh}{dt})$

Putting values, we get,

$\dfrac{dV}{dt} = \dfrac{\pi}{3}(2(6)(12)(9) + (6)^2(12))\\\\\dfrac{dV}{dt} =1808.64\text{ cubic cm per second}$

Thus, the volume of cone is increasing at a rate 1808.64 cubic cm per second.

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2 years ago

Jackson spends 214 hours painting 212 pictures. He spends the same amount of time painting each picture. How much time, in hours

Wewaii [24]

1 hour and 7 1/2 minutes per picture
2 1/4 = 60 * 2 = 120 + 15 = 135/2= 67.5 = 1 hour and 7 1/2 minutes

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2 years ago

PLEASE HELP THIS IS URGENT I AM BEING TIMED!!

Volgvan

Answer:

1/30 or 3.333%

Step-by-step explanation:

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3 years ago

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liubo4ka [24]

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Step-by-step explanation:

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2 years ago

Reduce the fractions<br> 12/5

Tresset [83]

If you reduce the fraction to a mixed number than it would be 2 2/5 but if you want to reduce it to a decimal it would be 2.4

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3 years ago

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