Question

A(triangle ABC):A(triangle PQR)=1:2 and AB=4 then PQ=?​

Answer 1

A(triangle ABC):A(triangle PQR)=1:2 and AB=4 then PQ=?

(PQ/AB)² = A(∆PQR)/A(ABC)

=> PQ²/4² = 2/1

=> PQ² = 16×2

=> PQ = √(16×2)

= 4√2

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