1.

a rectangle's length is 6cm more than its breadth. the area is 112 cm².what is its perimeter?

Answer»

112 = l * (l+6)

l²+6l-112 = 0

solve to find l.

112=(x+6)x112=x²+6xx²+6x-112=0X²+14x-8x-112=0X=8,-14So x=8,x+6=14Perimeter =2(l+b)=2(22)=44



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