The top and bottom margms Op a poster are are 8 cm and Hhe Side mary Ms'are each 6 cm if Hhe ae a of pante ol material on the paster is hikeb, 6at 386 cm² And the dimension's of the poster with the Smallest area 386=XY A = (X+816)CY t 2) १९८ । 386 y=386 386+ 12) メ A=X+16)7 8cm A=X·386 X. 386x %3D 22.686 192 386+12x+ 6176 4 日ミax+G176X+578 A 12-6176X 12-6176X*2 =o.-6176 7- 12 -2 176 ax x.1な GI76 ズ 12x² 12x2= 6176 %3D 519.66=VX Ca2.686=X) 12 x²-514.66 %3D 386 17.01:7 22.686 1- A=12x+6G176X+57s A 76 x + 3088X+ 289) A'=64-3088X-4 6-3088x2 -6 -3088 x-Z -6.x" + 578 = O %3D -30884=-6x -6 V514.6€7=X =22.689 3. A" = 6176X %3D 6176 +272.23 MIN %3D 22.686

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