what are some problems you might encounter when

a)finding the volume of a rugby ball
b)finding the diameter of a tennis ball
c) finding the mass of a grain of sugar

can you help me then I help you please w/b

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
*there your help now you help me please...

Of course, I'd be happy to help you! Just let me know what you need assistance with and I'll do my best to provide you with the information you're looking for.