△abc△abc is similar to △qrs△qrs. also, sideabsideab measures 50 cm, sideacsideac measures 60 cm, and sideqssideqs measures 6 cm. what is the measure of sideqrsideqr ? show all your calculations!

Assuming the triangle ABC is equal to the triangle QRS means that their sides will have the same size.
So the side AB is the same as QR. As well as  BC is the same size as RS; AC is the same as QS.
So, if AB = QR that means that both have 50 cm.
50 cm