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Thursday, 05 March 2026
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Make R the subject of the fomula S = \(\sqrt{\frac{2R + T}{2RT}}\)

Make R the subject of the fomula S = \(\sqrt{\frac{2R + T}{2RT}}\)
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  • A R = \(\frac{T}{(TS^2 + 1)}\)
  • B R = \(\frac{T}{2(TS^2 - 2)}\)
  • C R = \(\frac{T}{2(TS^2 + 1)}\)
  • D R = \(\frac{R}{2(TS^2 + 1)}\)
Correct Answer: Option B
Explanation:
S = \(\sqrt{\frac{2R + T}{2RT}}\)
Squaring both sides,Â
\(S^{2} = \frac{2R + T}{2RT}\)
\(S^{2} (2RT) = 2R + T\)
\(2S^{2} RT - 2R = T\)
\(R = \frac{T}{2TS^{2} Â - 2}\)
= \(\frac{T}{2(TS^{2}Â - 1)}

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