Science/maths

describe how you could make the following measurements and discuss any problems you might encounter
a) finding the volume of a rugby ball
b) finding the diameter of tennis ball.
c) findin the mass of a grain of sugar

a) submerge it in water in a graduated container and find its volume by amount the water rises in the container. (law of displacement)

b) measure its circumfrence by wrapping a string around it and then measure the string. Next divide this measured length by pi (3.14)

c)Place it on a very accurate small metric scale

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