Question 631648
Use Heron's Formula
{{{A = sqrt(s(s-a)(s-b)(s-c))}}} where {{{s = (a+b+c)/2}}}, semi-perimeter
{{{s = (23 + 23 + 22)/2 = 34}}}
therefore {{{A = sqrt(34(34-23)(34-23)(34-22))}}}
          {{{A = highlight(222.2 )}}} {{{cm^2}}}