Find the prime factorization of 81

3 × 3 × 3 × 3

or 3^4

9 × 9 = 81

(3 × 3) × (3 × 3) = 81

13875138answer:

step-by-step explanation:

use a calculator!

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.