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Mathematics, 08.12.2020 02:30 july00
A cone has a volume of 300 units cubed and a cylinder has a volume of 100 units squared is it possible that the cylinder and the cone have the same height and the same radius? Why or Why not?
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Mathematics, 20.06.2019 18:04
Here is their argument. given the obtuse angle x, we make a quadrilateral abcd with ∠dab = x, and ∠abc = 90◦, and ad = bc. say the perpendicular bisector to dc meets the perpendicular bisector to ab at p. then pa = pb and pc = pd. so the triangles pad and pbc have equal sides and are congruent. thus ∠pad = ∠pbc. but pab is isosceles, hence ∠pab = ∠pba. subtracting, gives x = ∠pad−∠pab = ∠pbc −∠pba = 90◦. this is a preposterous conclusion – just where is the mistake in the "proof" and why does the argument break down there?
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A cone has a volume of 300 units cubed and a cylinder has a volume of 100 units squared is it possib...
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