First we need to find the length of the missing triangle side which we can do with Pythagorean theorem A2+B2=C2 5^2+3^2= x^2 25+9=x^2 34=x^2 You square booth sides and end up with a decimal of 5.831 rounded for the missing side. Area for a rectangle is length times width so we multiply 7x5.831=40.817 Area of a triangle is the height times the base divided by 2 so 5.831x3= 17.493 Then you add those to together for the total area of the shape 40.817+17.493=58.31 58.31 is your approximate answer.
