Question

Q8. In ABC AP is the
median. If AP=7,
AB2 plus AC2 = 260
then find BC​

Answer 1

Answer:

BC = 18cm

Step-by-step explanation:

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by the Appolonius Theorem

(AB)^2 +(AC)^2 = 2(AP)^2 +2(PB)^2

260 = 2(7)^2+2(PB)^2

260 = 98+2(PB)^2

162 = 2(PB)^2

81 = (PB)^2

PB = 9 cm

PB = BC/2

9 = BC/2

BC = 18cm

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