Answer:
Polygons - Hexagons. So, the sum of the interior angles of a hexagon is 720 degrees. All sides are the same length (congruent) and all interior angles are the same size (congruent).
Step-by-step explanation:
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You can make a proportion of 8/20 to 42/x and then simply cross multiply from there to solve for y
X=5, y=-4
(5,-4)
do you need the work?
percent of water is: 32/80*100= 40%