To find out how far a line of qqr watermelon seeds would stretch, we need to know the value of "q" (the number of watermelon seeds in the line). Since "qqr" is given as the number of seeds, let's assume that "q" is the number of seeds in the line.
Given that each watermelon seed is 0.4 cm long, the length of a line with "q" seeds can be calculated as follows:
Length of the line (in centimeters) = q * 0.4 cm
Now, let's convert the length to meters:
Length of the line (in meters) = (q * 0.4 cm) / 100 cm/m
Since the unit conversion involves dividing by 100 (from centimeters to meters), we can simplify the expression:
Length of the line (in meters) = (q * 0.4) / 100
Thus, the length of the line of "q" watermelon seeds would be (q * 0.4) / 100 meters.