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Kaylis [27]
3 years ago
7

Please help thanks so much

Mathematics
1 answer:
Umnica [9.8K]3 years ago
5 0
The formula for the volume of a sphere is the following:

V= \dfrac{4}{3} \pi r^3

Plug in V=5000π and solve for the radius.

5000 \pi = \dfrac{4}{3} \pi r^3

Divide both sides by \pi

5000 = \dfrac{4}{3} r^3

Multiply both sides by 3/4 (to eliminate the 4/3 on the right side)
Also, flip the equation so we have the unknown variable on the left side (math etiquette).

r^3=3750

Take the cube root of both sides

r \approx 15.5

Now, calculate the surface area since now we know the radius.
The formula for the surface area is the following:

S=4 \pi r^2

Plug in r=15.5

S \approx 3033

The second choice is your answer.
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3 yards 5 feet 6 inches x 7=
DaniilM [7]

Answer:

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Step-by-step explanation:

First, let's make our numbers equivalent to a certain unit. Preferably inches, since we can't turn inches into yards or feet, but we can turn yards and feet into inches.

3 yards is 9 feet, which when multiplied by 12 (12 inches in a foot) is 108.

5 feet times 12 is 60 inches.

6 inches is 6 inches.

108+60+6 is 174

Multiply all that by 7 and you get your answer of 1218 inches.

Hope this helps!

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How to round 808,879 to the nearest hundred thousand and 10 thousand and thousands
yanalaym [24]

To round them, you need to look at the number and understand what the place formats are. If a number is in the hundred thousand range, it would be 100,000, which means that the number 808,879 as a whole is a hundred thousand, making it 800,000 rounded to the nearest. It is 800,000 due to the thousands digits, (8,879) being small enough to not make it into 900,000. For the ten thousands spot, that would be the number as shown above, (8,879) making it rounded to 10,000. So that would mean if you are asking for both rounded at the same time, it would be 810,000. :)

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