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)
$$\eqalign{ & QR = \sqrt {{{\left( {PR} \right)}^2} - {{\left( {PQ} \right)}^2}} \cr & \,\,\,\,\,\,\,\,\,\,\,\,\, = \sqrt {{{25}^2} + {3^2}} \cr & \,\,\,\,\,\,\,\,\,\,\,\,\, = \sqrt {625 - 9} \cr & \,\,\,\,\,\,\,\,\,\,\,\,\, = \sqrt {616} \cr & \,\,\,\,\,\,\,\,\,\,\,\,\, = 2\sqrt {154} \,cm \cr} $$This Question Belongs to Arithmetic Ability >> Area
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