(d) A 16cm diameter ring cake tin with curved sides is being designed. The cross section of The new cake tin design is shown in the diagram below. The cake tin is symmetrical about DH. D is the midpoint of BF. The curved surfaces AB and FG may be modelled by two parts of a parabola. The curved surface CHE may be modelled by a second parabola. AG = 16cm and H is the midpoint of AG A H G CE = V8cm = 2/2cm DH = 12 cm BF = 8 cm в сDE F Diagram NOT to scale

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