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15 * 22/5 = 15*12/5 = 36
It is: 14+15+22+21 = 72/4 => 18 which is the mean average
mean(18, 23, 39, 10, 22, 17, 16, 15) = (18 + 23 + 39 + 10 + 22 + 17 + 16 + 15) ÷ 8 = 160 ÷ 8 = 20
22*18*12 = 4752 cubic units.
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