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Mathematics · 2026 · 1 mark
CBSE 2026 · Region 1 · Set 1 · Q7
If Δ ABC and Δ DEF are similar such that 2 AB = DE and BC =8 cm, then EF is equal to:
If $\displaystyle \Delta \mathrm{ABC}$ and $\displaystyle \Delta \mathrm{DEF}$ are similar such that $\displaystyle 2 \mathrm{AB}=\mathrm{DE}$ and $\displaystyle \mathrm{BC}=8 \mathrm{~cm}$, then EF is equal to :
Official answer
(D)
$\displaystyle 16$ cm
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CBSE Class 10 Mathematics past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.