If a line of one billion people standing shoulder to shoulder stretches 346,439 miles long, what is the average shoulder width, in feet, of the people in the line?

Let us first convert the length from miles to feet. 1 mile = 5280 ft

length = 346,439 mile * (5280 ft / 1 mile)

length = 1,829,197,920 ft

So the average shoulder width is simply the quotient of the length and number of people, that is:

average shoulder width = 1,829,197,920 ft / 1,000,000,000 people

average shoulder width = 1.83 ft

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.