Final answer:
To construct triangle QRS, draw a line segment QS of length 12cm, draw a perpendicular line segment QR of length 6cm from Q, and connect R to S to complete the triangle.
Step-by-step explanation:
To construct triangle QRS, we can use the given information. Start by drawing a line segment QS with a length of 12cm. Then, draw a perpendicular line segment QR with a length of 6cm from Q. Connect R to S to complete the triangle. Since angle SQR measures 90 degrees, the triangle QRS is a right triangle.