In the diagram below, start overline, T, U, end overline TU is parallel to start overline, Q, R, end overline QR . If R, U, equals, 5 RU=5, T, U, equals, 10 TU=10, and Q, R, equals, 15 QR=15, find the length of start overline, S, U, end overline SU . Figures are not necessarily drawn to scale. State your answer in simplest radical form, if necessary.
