Question Number 52108 by ajfour last updated on 03/Jan/19
Answered by mr W last updated on 03/Jan/19
$${Area}=\frac{{cR}}{\mathrm{2}}=\frac{\sqrt{\left({a}+{b}+{c}\right)\left(−{a}+{b}+{c}\right)\left({a}−{b}+{c}\right)\left({a}+{b}−{c}\right)}}{\mathrm{4}} \\ $$$$\Rightarrow{R}=\frac{\sqrt{\left({a}+{b}+{c}\right)\left(−{a}+{b}+{c}\right)\left({a}−{b}+{c}\right)\left({a}+{b}−{c}\right)}}{\mathrm{2}{c}} \\ $$
Commented by ajfour last updated on 03/Jan/19
$${Oh}\:{Yes}\:{Sir}.\:{i}\:{should}\:{have}\:{seen}. \\ $$