Answer:
273.2 units²
Step-by-step explaanation:
Area of a circle =
r²
Area of red circle = 16 units² x
= 256 units²
= 804.224 units²
Area of blue circle = 13 units² x
= 169 units²
= 530.914 units²
Area of desired portion = area of bigger circle - area of smaller circle
804.224 units² - 530.914 units² = 273.31 units²
≈ 273.2 units²