Let A and B be sets with cardinal numbers n(A)=a and n(B)=b, respectively decide whether the statement is true or false n(AuB)+n(AnB)=n(A)+n(B)

step-by-step explanation:

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.

this is answer of 144 cubic meters

answer: 193

explanation:

200-7 = 193