ABC26GN4451 · Area

Subject: General Aptitude · Chapter: Area · Exam: 2011 · Marks: · Difficulty:

In DPQR, side PQ = 32 cm and side PR = 25 cm. What is the measure of side QR ?

(a)$4\sqrt{154}$ cm

(b)$2\sqrt{308}$ cm

(c)$4\sqrt{308}$ cm

(d)Cannot be determined

(e)None of these

Answer

Answer (as printed): E

Explanation

$QR=\sqrt{(PR)^{2}-(PQ)^{2}}=\sqrt{(25)^{2}-3^{2}}\ \text{cm}=\sqrt{625-9}\ \text{cm}=\sqrt{616}\ \text{cm}=2\sqrt{154}\ \text{cm}$.

Explanation as extracted from the printed page; notation may be imperfect.