The area of the composite shape is 159.25".
What is the area of the composite shape?
Area of the composite shape = Area of rectangle + Area of semicircle
Area of rectangle = length × width
= 12 × 10
= 120"
Area of semicircle = ½ × π × r²
= ½ × 3.14 × 5²
= ½ × 3.14 × 25
= 39.25"
Therefore,
Area of the composite shape = Area of rectangle + Area of semicircle
= 120" + 39.25"
= 159.25"