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A=x,h=(x - 4) b=(2x + 1).area of trapezium is 33 m^2 |
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Answer» Area=1/2(a+b)H 66=3x²-12x+x-4 70=3x²-11x 3x²-11x-70=0 3x²-21x+10x-70=0 3x(x-7)+10(x-7)=0 3x+10=0 or x-7=0 x=-10/3 or x=7 |
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