Explanation: Property: $AE \times EB = CE \times ED$. $4 \times 6 = 3 \times ED \implies 24 = 3 \times ED \implies ED = 8$. $CD = CE + ED = 3 + 8 = 11$ cm.
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This paper covers the key topics: Number System, Algebra, Trigonometry, Geometry, and Mensuration. Explanation: Property: $AE \times EB = CE \times ED$
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