3 years ago

A Cube has a face area of 81 square centimeters. What is the volume of the cube?

1 answer:

4 0

Well, if one face has an area of 81 square centimeters, then that means that each side of the square is 9 centimeters. The formula to find volume is $l^3$ , so 9^3 = 729.
In short, your answer would just be 729 centimeters $^3$

Hope this helped!!!

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soldier1979 [14.2K]

Answer:

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Step-by-step explanation:

You add the two equations to get: 4x=20

Then you get x=5.

You plug this in to x-y=17 to get y=-12

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3 years ago

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Step-by-step explanation:

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3 years ago

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Sergio039 [100]

Answer:

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3 years ago

Two trains leave Stations 396 miles apart at the same time and travel towards each other. One train travels at 95 mph while othe

PolarNik [594]

It will take 2.2 hours for the trains to meet.

Step-by-step explanation:

Given,

Distance between two trains = 396 miles

Speed of one train = 95 mph

Speed of other train = 85 mph

Combined speed of trains = 95+85 = 180 mph

Distance = Speed * Time

Time = $\frac{Distance}{Speed}$

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Time = 2.2 hours

It will take 2.2 hours for the trains to meet.

Keywords: speed, distance

Learn more about distance at:

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