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Smaller base of an isosceles trapezoid= 30 cm. larger base = 60 cm. If the height of the trapezoid is 8 cm, what is the length of the legs? Algebra II. It needs to be simplified with steps and solution please.? What is 24w^9-12w^7+9w^3/3w^3? Is it possible our universe is the creation of a black hole in another universe and the big bang was a white hole? What's oxygen mean if it is acid?