Q4 of 49 Page 25

ΔLMN ~ ΔPQR, 9 × A(ΔPQR) = 16 × A (ΔLMN). If QR = 20 then find MN.

∵ Δ ABC~Δ PQR

⇒ Given that, 9× A(Δ ABC) = 16× A(Δ PQR)


⇒


And,


⇒


⇒


⇒ MN2 =


⇒ MN = 15


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