Problema Solution
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The height of a cylinder with constant volume is inversely proportional to the square of its radius. If h = 8 cm when r = 4 cm, what is r when h = 2 cm
Answer provided by our tutors
h = k/ r^2
2 = k/ 16
k = 32
so
8= 32/r^2
r^2 = 32/8 = 4
so r = 2cm