2 years ago

Please help... I'm struggling

Mathematics

1 answer:

babunello [35]2 years ago

8 0

Answer:

Step-by-step explanation:

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Use differentials to estimate the amount of paint needed (in m3) to apply a coat of paint 0.04 cm thick to a hemispherical dome

pogonyaev

The amount of paint is the volume of paint needed.

The amount of paint needed is 0.065312 cubic meters

<h3>How to determine the amount of paint needed</h3>

The volume of a hemisphere is:

$V = \frac 23\pi r^3$

Differentiate the above equation

$V' = 2\pi r^2 r'$

The above equation represents the estimate of the amount of paint needed.

Where:

r represents the radius (r = 52/2 m)
r' represents the thickness (r' = 0.04 cm)

So, we have:

$V' = 2\pi r^2 r'$

$V' = 2 * 3.14 * (52/2\ m)^2 * (0.04cm)$

$V' = 2 * 3.14 * (26\ m)^2 * (0.04cm)$

Express cm as m

$V' = 2 * 3.14 * (26\ m)^2 * (0.0004m)$

$V' = 0.065312 m^3$

Hence, the amount of paint needed is 0.065312 cubic meters

Read more about volumes at:

brainly.com/question/10171109

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2 years ago

What is the value of x? 1/2(x-14)+11=1/2x-(x-4)

mylen [45]

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Will works 40 hours a week as a pharmacist. if he made 40,560 last year, how much was he paid per hour

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Evaluate the expression when m = 4.

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The ratio of minutes to gallons of water flowing through a garden hose is 2 to 12 carlota says that an equivalent ratio of minut

blagie [28]

Answer:

Carlota is not correct

Step-by-step explanation:

A ratio represents relationship between of two or more things.

Ratio of minutes to gallons of water flowing through a garden hose $=2:12$

Here,

$2:12=1:6$

Also,

It's given that an equivalent ratio of minutes to gallons is $6:1$

Now,

$1:6\neq 6:1$

Therefore,

Carlota is not correct

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3 years ago