Which density is expressed correctly to three significant figures?.

4 packs of water and 7 packs of candy bars

step-by-step explanation:

35x4=140

140/20=7

486in is correct

step-by-step explanation:

for this case we have that by definition, the volume of a cylinder is given by:

where:

r: it's the radio

h: it's the height

we have as data that:

substituting:

so, the cylinder volume is

option d