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In the following figure set `PS_|_` seg `RQ`,set `QT_|_` set PR. If `RQ=6,PS=6` and `PR=12`, then find the QT.

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In the following figure set `PS_|_` seg `RQ`,set `QT_|_` set PR. If `RQ=6,PS=6` and `PR=12`, then find the QT.
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`RQ=6,PS=6` and `PR=12` ………(Given)
Area of a triangle `=1/2xx"base"xx"height"`
`A(DeltaPQR)=1/2xxQRxxPS`
`:.A(DeltaPQR)=1/2xx6xx6`
`:.A(DeltaPQR)=18` sq units ..1
Also `A(DeltaPQR)=1/2xxPRxxQT`
`:.18=1/2xx12xxQT`
`:.QT=18/6`
`:.QT=3`
`QT=3`.
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