In ΔPQR, 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: Option E

Solution(By Examveda Team)

$$\eqalign{ & QR = \sqrt {{{\left( {PR} \right)}^2} - {{\left( {PQ} \right)}^2}} \cr & \,\,\,\,\,\,\,\,\,\,\,\,\, = \sqrt {{{25}^2} + {3^2}} \cr & \,\,\,\,\,\,\,\,\,\,\,\,\, = \sqrt {625 - 9} \cr & \,\,\,\,\,\,\,\,\,\,\,\,\, = \sqrt {616} \cr & \,\,\,\,\,\,\,\,\,\,\,\,\, = 2\sqrt {154} \,cm \cr} $$