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Vlad1618 [11]
2 years ago
6

The radius of the sphere is 10 units. What is the approximate volume of the sphere? Use and round to the nearest whole cubic uni

t. 42 cubic units 126 cubic units 4187 cubic units 73,385 cubic units
Mathematics
2 answers:
erica [24]2 years ago
4 0

Answer:

The approximate volume of the sphere= 4187  cubic units

Step-by-step explanation:

<u>Points to remember</u>

Volume of sphere = (4/3)πr³

Where 'r' radius of sphere

<u>To find the volume of sphere</u>

It is given that the radius of the sphere is 10 units. ,

Here radius r = 10 units

Volume =  (4/3)πr³

 =  (4/3) * 3.14 * 10³

 =  (4/3) * 3140

 =  4186.666 ≈  4187  cubic units

VikaD [51]2 years ago
4 0

Answer:

Option C.

Step-by-step explanation:

Radius of the sphere is given as 10 units.

We have to calculate the volume of this sphere.

Since formula to measure the volume of sphere is V = \frac{4}{3}\pi r^{3}

V =  \frac{4}{3}\pi 10^{3}

  =  \frac{4}{3}(3.14)(10^{3})

  = 4186.67

  ≈ 4187 cubic units.

Option C. is the answer.

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Vesna [10]

Answer:

Step-by-step explanation:

We will find two equations for this system, one representing flour and the other representing cocoa.  For the flour, we start with $2.50, and the cost goes up .07 per month, x. The equation for that is

y = .07x + 2.50

For the cocoa, the equation is written in the exact same way, but the cost goes down.  Down is a negative thing while up is a positive thing.  The cost starts at $6.00 and goes down .03 per month, x. The equation for that is

y = -.03x + 6.00

Comparing the first equation to the second, the .07 is positive because the cost goes UP that amount per month and the .03 is negative because the cost goes DOWN that amount per month.  Get it?

If y is cost and we are tryong to find out where the cost is the same, we are looking for when y is the same.  If the first y is equal to .07x + 2.50 and the second y is equal to -.03x + 6.00, and y is equal to y, then

.07x + 2.50 = -.03x + 6.00 (this is setting the first y equal to the second y).  This is the system that describes how to find the number of months x when the cost y is the same. We'll solve it just for practice.

Combining like terms we get

.10x = 3.5 so

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What this answer tells us is that 35 months after the start of this pricing, the cost of flour will be the same as the cost of cocoa.  But immediately after 35 months, the costs will not be the same anymore.  It is only AT 35 months.  At 36 months, the costs will be different.

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8 0
2 years ago
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Answer:

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Step-by-step explanation:

If you go up an elevator, you are gaining floors, so the number is positive.

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Looking at the statement, he went 7 floors up to his room, then 9 floors down to the parking garage this can be represented as 7 - 9, since the 7 is positive and the 9 is negative.

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Answer:

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