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Marta_Voda [28]
3 years ago
9

A square sheet of rubber has sides that are 20 cm long. What is the area of the square of rubber in cm squared?

Physics
1 answer:
Alinara [238K]3 years ago
6 0

Answer:

400cm^2

Explanation:

sides are 20cm long Area for a square is a squared

since all the lides are of equal length you can just choose one side.

20squared is 400

20 x 20 = 400cm squared

Hope this helps :)

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what is the density of a substance that has a mass of 2.0 g , and when placed in a graduated cylinder the volume changed from 70
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A material with a mass of 2.0 g when placed in a graduated cylinder the volume changed from 70 ml to 75 ml has a density of 0.4 g/mL.

How do I calculate the substance's density?

We'll start by getting the substance's volume. This is attainable as follows:

Water volume: 70 mL

75 mL = volume of material + water.

Substance volume =?

Substance volume equals (substance volume plus water) - (Volume of water)

Substance volume = 75 - 70

5 mL is the substance's volume.

Finally, we will calculate the substance's density. Below is an example to help:

2.0 g is the substance's mass.

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Substance density =?

Mass / volume equals density.

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0.4 g/mL is the substance's density.

The density is therefore 0.4 g/mL.

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Ilia_Sergeevich [38]

Answer:

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8 0
4 years ago
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sertanlavr [38]
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Answer:

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