1.

in figure 1 , the sides AB,BC,CA of a triangle ABC touch a circle at P,Q,R respectively. of PA=4cm,BP=3cm,AC=11 cm. them find the length of BC

Answer»

angle ABC, we haveBP= BQ = 3cmAP= AR = 4CM( tangents drawn from an external point to the circle are equal). So, RC = AC-AR=11-4=7cmHence RC= CQ= 7 cmThen, BC= BQ+QC7+3=10cm



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