Cheng's answer to Amanda's Secondary 3 E Maths Singapore question.
how did you get volume of cone?
the question says the moon crashed on earth and formed a conical mountain (lol) so use the volume of moon you calculated in part 1. Since spherical moon become the conical mountain so the total volume remains the same
oh so it was a mistake is it cause for the volume of come you put 10^9 instead of 10^19
omai yea yea oopss
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