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7th Class Mathematics The Triangle and its Properties

  • question_answer 1)
    PQR is a triangle right-angled at P. If \[PQ=\text{10 cm}\] and  \[\text{PR}=\text{24 cm}\], find \[\text{QR}\].

    Answer:

                                    \[Q{{R}^{2}}={{10}^{2}}+{{24}^{2}}\] \[\left| \text{By Pythagoras Property} \right.\]                 \[\Rightarrow \]               \[=100+576=676\]                 \[\Rightarrow \]               \[QR=\text{26 cm}\]


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