- PLESASE HELP ME WITH THIS MATH QUESTION!!!?

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Rolls of foil are 304 mm wide and 0.012 mm thick. density of foil is 2.7 g/cm3
What maximum length of foil can be made from 1.21 kg of foil? How much NaOH (in grams) is needed to prepare 661 mL of solution with a pH of 9.655? Could people like us live in the mira ceti system? Which does more to tides, the moon waxing or when it's waning? Polar integral.....evaluate double intigral sqrt (x^2+y^2) da where d is the region bounded by cardioid r=1+cos (theta)......need help!!!!?