Consecutive members

The block has a volume of 1728 cm³. Determine the lengths of the edges a, b, c of the blocks for which a < b < c and a + b + c = 38 cm and whose numerical values in cm represent three consecutive members of the geometric sequence.

Correct answer:

a =  8 cm
b =  12 cm
c =  18 cm

Step-by-step explanation:

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