Final answer:
The mass of the heaviest zucchini ever grown is approximately 2.93 x 10^10 micrograms (ug).
Step-by-step explanation:
To find the mass of the giant squash in micrograms (ug), we can use the conversion factor from pounds to grams and then from grams to micrograms.
Given that there are 453.592 grams (g) per pound (lb), we can convert the weight of the zucchini from pounds to grams using the following equation:
64.5 lb * 453.592 g/lb = 29264.874 g
Since there are 1,000,000 micrograms (ug) in a gram (g), we can convert the weight from grams to micrograms using the following equation:
29264.874 g * 1,000,000 ug/g = 29264874000 ug
Therefore, the mass of the heaviest zucchini ever grown is approximately 2.93 x 10^10 micrograms (ug).