NOT TO SCALE The diagram shows solid $$\(A\)$$ and solid $$\(B\)$$ ． Solid $$\(A\)$$ is made from a hemisphere and a cone each with radius 6 cm ． The cone has sloping edge 10 cm ． Solid $$\(B\)$$ is a cylinder with radius 4 cm and height $$\(h \mathrm{~cm}\)$$ ． The total surface area of solid $$\(A\)$$ is equal to the total surface area of solid $$\(B\)$$ ． （b）Work out the height of solid $$\(A\)$$ ． ........................................ cm［3］

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