- What is the radius of a circle whose circumference is 64πcm?

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If 250 = 15a + b, a and b are both non-negative integers, and b<15, what is the value of b? How to fetermine lean protein? Which continent is the longest north to south ? Why do animal cells looks like wet and shaggy cartoon dogs and plant cells look like green little boxes? How many grams of Al2O3 are produced when 31.4 grams of O2 react completely with Al? 4 Al (s) + 3 O2 (g) → 2 Al2O3 (s)?