If ΔPQR and ΔLMN are similar and 3PQ = LM and MN = 9 cm, then QR is equal to:
A. 12 cm
B. 6 cm
C. 9 cm
D. 3 cm
Answer: Option D
Solution(By Examveda Team)
$$\eqalign{ & \frac{{PQ}}{{LM}} = \frac{{QR}}{{MN}} = \frac{{PR}}{{LN}} \cr & \left( {\vartriangle PQR\,{\text{and}}\,\vartriangle LMN\,{\text{are}}\,{\text{similar}}} \right) \cr & \frac{{PQ}}{{LM}} = \frac{{QR}}{{MN}} \cr & \frac{1}{3} = \frac{{QR}}{9} \cr & QR = 3\,{\text{cm}} \cr} $$
Related Questions on Triangles
If ABC and PQR are similar triangles in which ∠A = 47° and ∠Q = 83°, then ∠C is:
A. 50°
B. 70°
C. 60°
D. 80°
In the following figure which of the following statements is true?
A. AB = BD
B. AC = CD
C. BC + CD
D. AD < Cd
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