In the figure at the right end, PS is perpendicular to QR. IF PQ=PR and PS = 24, then QR=?
In the figure at the right end, PS is perpendicular to QR. IF PQ=PR and PS = 24, then QR=? Correct Answer 20
PQ2 + PS2 + QS2⇒QS2 = (26)2 - (24)2 = (26 + 24)(26 - 24) = 100⇒QS = √100 = 10∴QS = 10×2 = 20 [∵QS = SR;QR = 2QS]
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Feb 20, 2025