In \(\triangle PQR\), \(\angle PQR = 90°\) and seg \(QS \perp\) hypotenuse PR. If \(PS = 4\) and \(SR = 9\), then \(QS = \)
A. 6
B. 36
C. 13
D. 6.5
1 answer
Best answer
Answer: A. 6
By the theorem of geometric mean, \(QS^2 = PS \times SR = 4 \times 9 = 36\), so \(QS = 6\).
Doubtly AI
· 24 Oct 2026
AI-verified · Oct 2026
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