c
\({P_{sb}}\, = \,\,{P_c}\,{\left( {\frac{{{m_a}}}{2}} \right)^2}\,\, = \,\,{P_c}\,\frac{{{{(0.5)}^2}}}{4}\,\, = \,\,0.0625\,\,{P_c}\)

હવે \(P\, = \,\,{P_c}\,\left( {1\,\, + \,\,\frac{{m_a^2}}{2}} \right)\,\, = \,\,{P_c}\,\left( {1\,\, + \,\,\frac{{{{(0.5)}^2}}}{2}} \right)\,\, = \,\,1.125\,\,{P_c}\)

\(\,\% \,\) બચત  \( = \,\,\frac{{{\text{(1}}{\text{.125}}{{\text{P}}_{\text{c}}}\,{\text{ - }}\,\,{\text{0}}{\text{.0625}}{{\text{P}}_{\text{c}}}{\text{)}}}}{{1.125{P_c}}}\,\, \times \,\,100\,\, = \,\,94.4\% \,.\)