PLZ Check my Science Project's summary?!

The following r the instructions to my Project:
- Compose a scientific summary of your method, observations,
1. Why does the first method for determining volume
work only for a regular-shaped object?
2. Will the second method for determining volume work
for any object or just an odd-shaped one? Why?
3. Is one method of measurement more accurate than the
other? Why or why not?
4. Would the displacement method of measurement work
for a cube of sugar? What about a cork? Why?
5. What did you find out from this investigation? Be
The following is my scientific summary for my Project:

"For this experiment, I used a cube as my regularly-shaped object and a rock as my irregularly-shaped object. I filled a small beaker to approximately 60 mL. First, I measured the one of the cube’s sides and found it to be 1.5 cm, which means that all sides of the cube are 1.5 cm. This means that when I drop the cube in the water, it should displace about 3 to 4 mL of water. Once I had dropped the cube into the water, the water level rose to 63 mL meaning my hypothesis was correct. For the rock, I used the displacement method; using this method, I saw the water rise to around 65 mL. This means that the rock’s volume is roughly 5 cm3.

Through this investigation, I found that the 1st method of determining volume, using formulas, only works on regular objects because they have equal sides; for example, cubes & marbles. This method of determining volume is more accurate than the 2nd because the displacement method is used for pretty much any kind of object, whether regular or irregular. By measuring something like a cube, you’re likely to get a more accurate answer than by dropping it into water.

I also found that the 2nd method of determining volume, using the displacement method, works for both regular and irregular objects. The second method of displacement for determining volumes works on both regular and irregular objects because both kinds of objects are taking up space in the container, causing the water to be displaced. However, the displacement method can only be used for solid objects, like the cube or the rock. The displacement method would not work on a cork because its density causes it to float on top of the water, rather than displacing it. A sugar cube’s volume can be found using the displacement method, but only if the cube is placed in a liquid that won’t cause it to dissolve; putting the sugar in water only dissolves it."

Thanks for checking my summary & plz let me know what you think! I really need an A on this assignment! Just so u know, I'm in 8th grade (if that helps in any way)
Thanks again,
Natasha

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1. ALSO,
this project is overdue so i need this answered ASAP so i can turn it in TODAY!
- Natasha

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2. Great work.. did almost the same practical

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