## anonymous one year ago In the figure, PQ is parallel to RS. The length of RP is 6 cm; the length of PT is 18 cm; the length of QT is 21 cm. What is the length of SQ ? http://media.apexlearning.com/Images/201306/25/66e71d68-fcc2-4c5e-98c3-4cefeb92af64.jpg A. 63 cm B. 7 cm C. 12 cm D. 3 cm

1. jiteshmeghwal9

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2. jiteshmeghwal9

By basic proportionality theorem$\frac{pt}{pr}=\frac{qt}{qs}$$\frac{18}{6}=\frac{21}{qs}$find $qs.$