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Question Number 72639 by kennethalli last updated on 31/Oct/19
prove:(π/5)(3^2 +4^2 )^(1/2) =π
$${prove}:\frac{\pi}{\mathrm{5}}\left(\mathrm{3}^{\mathrm{2}} +\mathrm{4}^{\mathrm{2}} \right)^{\frac{\mathrm{1}}{\mathrm{2}}} =\pi \\ $$
Answered by MJS last updated on 31/Oct/19
are you serious?  (π/5)(3^2 +4^2 )^(1/2) =π((25^(1/2) )/5)=π(5/5)=π
$$\mathrm{are}\:\mathrm{you}\:\mathrm{serious}? \\ $$$$\frac{\pi}{\mathrm{5}}\left(\mathrm{3}^{\mathrm{2}} +\mathrm{4}^{\mathrm{2}} \right)^{\frac{\mathrm{1}}{\mathrm{2}}} =\pi\frac{\mathrm{25}^{\frac{\mathrm{1}}{\mathrm{2}}} }{\mathrm{5}}=\pi\frac{\mathrm{5}}{\mathrm{5}}=\pi \\ $$

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