1.

A=x,h=(x - 4) b=(2x + 1).area of trapezium is 33 m^2

Answer»

Area=1/2(a+b)H

33 =1/2*3X+1*x-4

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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