Respuesta :

Answer:

Step-by-step explanation:

points are A (0,-5) and B (4,-3) ,C(-1,7)

AB=√((4-0)²+(-3+5)²)=√(16+4)=√(20)=2√5

BC=√((-1-4)²+(7+3)²)=√(25+100)=√(125)=5√5

Area=AB×BC=2√5×5√5=2×5×5=50 sq. units