To form a triangle we need any two sides add up to be greater then the third one. a+b>c ; 240+121=361>263 ✅ a+c>b ; 240+263=503>121✅ b+c>a ; 121+263=384>240✅ Yes we can form a triangle with those dimensions. Area of triangle^2=S( S-a)(s-b)(s-c) Where S= (a+b+c)/2=(240+121+263)/2=312 Area of triangle^2= 312(312-240)(312-121)(312-263)=210240576 Area of triangle = Square root (210240576) =14499.67503 ~14,499.68