For the experiment done in lab, recall that applying σfx = max to the ball gives the equation fstring = m4π2f 2l. combine this result with the result of applying σfy = may and derive an equation for sin θ in terms of f and l. θ is the angle between the string and the horizontal.

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 use a^2+ b^2=c^2

the answer is 15 to your question

where is the graph or the picture? ?