To determine the volume of the rock, we can use the water level readings from the graduated cylinders you mentioned.
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Initial Volume of Water: This is the water measurement in the first graduated cylinder before adding the rock. It is given as 20 milliliters (mL).
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Final Volume with Rock: This is the water level in the second graduated cylinder after adding the rock, which is 32 milliliters (mL).
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Volume of Rock Calculation: To find the volume of the rock, we subtract the initial volume from the final volume:
\[ \text{Volume of Rock} = \text{Final Volume} - \text{Initial Volume} \]
Plugging in the values we have:
\[ \text{Volume of Rock} = 32 , \text{mL} - 20 , \text{mL} = 12 , \text{mL} \]
Since 1 mL is equivalent to 1 cm³, we can conclude that the volume of the rock is:
\[ \text{Volume of Rock} = 12 , \text{cm}^3 \]
So to summarize:
- Initial volume: 20 mL
- Final volume: 32 mL
- Volume of rock: 12 cm³