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Leni [432]
3 years ago
13

The diameter, D, of a sphere is 6.4 mm. Calculate the sphere's volume, V.

Mathematics
1 answer:
SCORPION-xisa [38]3 years ago
4 0

Answer:

Volume of sphere = 1.3 * 10^-7 cubic meters.

Step-by-step explanation:

Given the following data;

Diameter, D = 6.4 mm to meters = 6.4/1000 = 0.0064 meters.

But, Radius = diameter/2

Radius = 0.0064/2 = 0.0032 meters.

π = 3.14

To determine the volume of sphere, we would use the formula;

Volume \; of \; a \; sphere = \frac {4}{3} \pi r^{3}

Substituting into the equation, we have;

V = \frac {4}{3} * 3.14 * 0.0032^{3}

V =  4.186666667 * 3.2768 * 10^{-8}

Volume of sphere = 1.371886933 * 10^-7 cubic meters.

To the nearest tenth;

Volume of sphere = 1.3 * 10^-7 cubic meters.

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cupoosta [38]
Divide 309 by 3. You should get 103 (hamburgers). if you multiply that by 2 you will get 206 (cheeseburgers). Add the two together you get the total which was 309 originally.
103 hamburgers and 206 cheeseburgers.
3 0
3 years ago
If three pounds of coffee costs $22.56, what is the cost of 1
NeX [460]

Answer:

$7.52 = 7 dollars and 52 cents.

Step-by-step explanation:

Given that three pounds of coffee = $22.56

1 pound of coffee = $22.56/3

Thus, we would have:

\frac{22.56}{3} = 7.52.

A pound of coffee = $7.52

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8 0
3 years ago
mr yosgi has 75 papers he graded 60 of them and let a student grade the rest what percent if the papers did each person grade?
Alika [10]


He graded 60/75 papers.

If you divide these numbers instead of trying to simplify it equals the decimal 0.8.

If you move the decimal point two places to the right it's 80%.

6 0
4 years ago
10) please help<br> I don't understand this question at all
malfutka [58]
We can determine this to be a Geometric Sequence with:

a = 2
r = 1/2
an = ?

We must first find an. We know that an = 1/256, therefore we can use this formula to discover an:

an = a * r^n-1
1/256 = 2 * 1/2^n-1
<span>1/256 / 2 = 1/2^n-1
</span>1/512 = 1/2^n-1
<span>log(1/512) = log(1/2^n-1)
</span>9 = n - 1
10 = n

Therefore, we know an = 10

Now we input it into this equation and solve:

Sn = a(1-r^n/1-<span>r)
</span>Sn = 2(1-1/2^10/1-1/2<span>)
</span>Sn = 2(1023/1024 / 1 / 2)
Sn = 2(1023/1024 * 2 / 1)
<span>Sn = 2(2046/1024)
</span><span>Sn = 2(1023/512)
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Geez, that took awhile... xD




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3 years ago
Surface area of a cylinder
Ainat [17]

Answer:

Right cylinder

Step-by-step explanation:

Solve for surface arb

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