2 years ago

What number is 70% of 65?

Mathematics

2 answers:

harkovskaia [24]2 years ago

4 0

Answer:

the answer is 45.5 there you go

Step-by-step explanation:

miskamm [114]2 years ago

4 0

Answer:

The correct answer is 45.5

Step-by-step explanation:

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Convert 1111+102 into quinary number

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Answer:

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Step-by-step explanation:

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2 years ago

Mickey draws two distinct intersecting lines, p and q. Which conclusions must be true? Select three that apply.

timofeeve [1]

Hey there!

D is the answer.

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7 0

2 years ago

Read 2 more answers

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