If triangle ABC ~ triangle QPR and (tria...

If `triangle ABC ~ triangle QPR` and `(triangle ABC)/(triangle PQR)=9/4`,AC = 12 cm and AB= 18 cm and BC = 15 cm then PR is equal to :
मान लीजिये कि `triangle ABC ~ triangle QPR` तथा `(triangle ABC)/ (triangle PQR)= 9/4` हैं AC = 12 सेमी तथा AB= 18 सेमी और BC = 15 सेमी है, तो PR किसके बराबर है ?

20 cm

12 cm

8 cm

10 cm

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