(b) Calculate the length YZ. Give your answer correct to 3 significant figures. ..................... cm (3) (Total 6 marks) [March 2012 Calc] 7. is a right-angled triangle. PQR = 16 cm. PQ = 8 cm. PR Calculate the length of QR. Give your answer correct to 2 decimal places. ............................... cm (Total 3 marks) 18. The diagram shows a quadrilateral ABCD. [June 2012 Calc] = 16 cm. = 12 cm. Angle = 40. AB AD BCD Angle = angle = 90. ADB Calculate the length of CD. Give your answer correct to 3 significant figures. .............................................. cm (Total for Question 18 is 5 marks) [June 2012 Calc] 16.
(b) Calculate the length YZ. Give your answer correct to 3 significant figures. ..................... cm (3) (Total 6 marks) [March 2012 Calc] 7. PQR is a right-angled triangle. PQ = 16 cm. PR = 8 cm. Calculate the length of QR. Give your answer correct to 2 decimal places. ............................... cm (Total 3 marks) [June 2012 Calc] 18. The diagram shows a quadrilateral ABCD. AB = 16 cm. AD = 12 cm. Angle BCD = 40. Angle ADB = angle = 90. Calculate the length of CD. Give your answer correct to 3 significant figures. .............................................. cm (Total for Question 18 is 5 marks) [June 2012 Calc] 16.