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Still me... by the way, this is an 8th grade science experiment so simplicity would be nice. Thank you for your assistance in advance.
A caliper is more accurate.
That depends on the shape. If it is a uniform configuration with simple sides or walls where accurate dimension are used then calculating the volume is more accurate. If the cavity is of a unusual shape such as the combustion chamber for a cylinder head on an engine, then water displacement is more accurate. With modern software, dimension for such a cavity can be calculated by computer. However, variation to the cavity when machined or cast will never be the same as the computer model. R. Clontz
There are 100 centimeters in a meter. The second student (y) would be more accurate.
First way: Ruler and Fomula (L*W*H)Second way: What_are_3_different_ways_to_find_volumedisplacement with graduated cyclinderThird way: Water displacement with overflow canRead more: What_are_3_different_ways_to_find_volume