Question 927414
side(a)= 5 ft
area of equilateral triangle (A)=  {{{ (sqrt(3)/4)a^2}}} 
 = {{{ (sqrt(3)/4)5^2}}} 
 ={{{ (sqrt(3)/4)*25}}} 
 = {{{sqrt(3)*25/4}}}
 ={{{ sqrt(3)*6.25}}}
 ={{{1.732*6.25}}}
 =10.825 sq feet
1 foot =30 cm
 = 10.825*30*30
 =9742.5 square cm
result:  9742.5 square cm