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Let ABCD be a rectangleAB = CD = 9 ftBC = DA(AB)x(BC) = 54 ftBC = 54/(AB) = 54/9 = 6 ftperimeter = (AB)+(BC)+(CD)+(DA) = 2(AB)+2(BC) = 2x9+2x6 = 30 ft
since BC=1/2 AC you take half of 54 then solve the equation. 3x^2=54/2 3x^2=27 x^2=9 x=3
Two digit no possibility whose sum is 12 = 39,48,57,66,75,84,93 See the difference of above no with 54 1.39-54=-15 2.48-54=-6 3.57-54=3 4.66-54=12 5.75-54=21 6.84-54=30 7.93-54=39 The last no 7 mentioned shows 93 is the ans because if you reverse it 39 will come it 54 less than 93. And=93
54, 54, 54, 54, 54, 54, 54, 54, 54, 84 The median is clearly 54. The mean is ((54*9)+84)/10 = 57.
The closest whole number is 54 which is 625.