1. In ΔPQR, S and T are points on side PQ and PR respectively. ST is parallel to QR. If S divides PQ in the ratio 4:1 and length of QR is 15 cm,what is the length of ST?
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- By: anil on 05 May 2019 02.09 amIt is given that PS : SQ = 4 : 1 and QR = 15 cm Let PS = 4cm and SQ = 1 cm ST is parallel to QR => $$frac{PS}{PQ} = frac{ST}{QR}$$ => $$frac{4}{4 + 1} = frac{ST}{15}$$ => $$frac{4}{5} = frac{ST}{15}$$ => $$ST = 4 imes 3 = 12$$ cm => Ans - (C)
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