Here is the video I made about my science assignment-finding my volume. It is just about a minute long, and shows the two solutions I used to find my volume using water displacement.
My first solution involved water displacement. My plan was to fill up my bathtub till an amount in which I think I can fit my whole body in, mark the height, and submerge myself entirely into the water. After measuring the height of the water and marking it both before and after I went into the bathtub, I found my volume. I had displaced 6 centimeters high of water. (The water level was 24 cm before I went in and 30 cm while I was in the water.) I then had to multiply the height of the water I had displaced by the surface area of the water. I multiplied the width of the water (45 cm) by the length of the bathtub (125 cm) by 6 cm (the height of the water I had displaced). My product was 33,750 cm3, or 33.7 liters.
I wanted to check my answer with another solution. This was to fill up the bathtub to the second mark (the water height with me in it); then use my 500ml measuring cup and took out water, counting each full cup. To compare this method to my first strategy, I would need around 66 cups because 500ml x 2= 1 liter, and with the first method, I got 33 liters. Using this method, I got 64 cups, which is 32 liters. This means my volume is between 32 and 34 liters.
Here are two assumptions I made before performing this experiment:
- My bathtub has the shape of a rectangular prism.
- My swimsuit and goggles do not have a significant enough volume to interfere with calculating my volume.
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