Squash and water is mixed in the ratio 1:3 if 2 litres of drink is made, how much water is used?

If by 1:3 ratio, you mean that you have 4 total parts. Then 1.5 litres of water is used with 0.5 litres of squash to make 2 litres of drink.

Step-by-step explanation:

1+3 = 4 parts of drink.

2L / 4 = 0.5 L

1 part squash = 0.5 L squash

3 parts water = 1.5 L water

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.

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step-by-step explanation: