Simplify √18a^3b^5 a - 18ab√ab b - 2ab^2√3ab c - 3a^2b^3√2 d - 3ab^2√2ab

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What is the value of x in the following equation. -x ^3/2 = -27

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).