If ? ABC similar to ? PQR, ar(? ABC):ar(? PQR) =9:4,AB=18cm and BC=15cm,then find the value of QR

If ? ABC similar to ? PQR, ar(? ABC):ar(? PQR) =9:4,AB=18cm and BC=15c

1.	If ? ABC similar to ? PQR, ar(? ABC):ar(? PQR) =9:4,AB=18cm and BC=15cm,then find the value of QR
Answer» 10 cm In this we have used thereom the ratio of ares of 2 similar is equal to the square of there corresponding side Ar?ABC\\Ar?PQR = 9/49/4=(15^2/x^2)9225=4x^22025= 4*x^22025/4=x^2506.25=x^222.5=xSo QR =22.5 Qr is 10 10cm