Question

If triangle ABC~ triangle PQR , AB=4cm ,PQ=12cm ,BC=7cm , find QR​

Answer 1

Answer:

Tri ABC ~ Tri PQR

therefore, AB/PQ=BC/QR------(corresponding sides of similar triangles)

4/12=7/QR

12×7= 4QR

12×7/4= QR

7×3=QR

Thus QR =21 cm.