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प्रश्न
In Δ PQR, points S and T
are the midpoints of sides PQ
and PR respectively.
If ST = 6.2 then find the length of QR.
उत्तर
In Δ PQR, S and T are midpoints of side PQ and side PR.
ST = 6.2
ST= `1/2` × QR ...............(Theorem of midpoints of two sides of
a triangle.)
`∴6.2 = 1/2`× QR
∴QR = 6.2 × 2
∴QR = 12.4
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