Math, asked by sbhuchhda, 3 months ago

In ∆PQR, seg PM is a median, PM=9 and PQ²+ PR²= 290. Find the length of QR

Answers

Answered by bratatimondal2006

5

Step-by-step explanation:

PQ2+PR2=2PM2+QM2+RM2

290= 2X81+ 2 QM2. (QM=RM)

290-152=2QM2

128/2= QM2

QM=8

QR= QM+MR=8+8=16

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