A 12 x 18 photograph is pasted in the center of a sheet such that there is a border around it with an equal width all around the picture. Find the width of this border if it is known that the area of both the picture and the border is 280 cm^2.

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.

answer: '

the distance between points l and m

step-by-step explanation: