For this case what you should know is that you have the area of a quarter of a circle which is: A1 = 30.25pi cm ^ 2 We now look for the area of the triangle, which by definition is: A2 = (1/2) * (b) * (h) Where, b: base h: height Substituting the values: A2 = (1/2) * (11) * (11) A2 = 60.5 cm ^ 2 The area of the shaded region will be given by the subtraction of both areas: A1-A2 = (30.25pi - 60.5) cm ^ 2 Answer: A1-A2 = (30.25pi - 60.5) cm ^ 2 option 3
