Answer:
B. 20.2 in²
Step-by-step explanation:
First you find the area of the whole rectangle, which would be base × height, or 5 × 6.
Area of the rectangle is 30
Now you must find the area of the half circle with the formula: A= 1/2 π r²
r represents the radius. 5 is the diameter of the circle, which is double the radius. Hence, the radius is 2.5
Next you can plug in 2.5 in the formula
A= 1/2 π (2.5)²
A= 1/2 π (6.25)
A= 1/2 (19.63)
A= 9.8
Now that you have both areas, subtract the area of the semicircle from the area of the rectangle to get the area of the shaded region.
30 - 9.8 = 20.2
is 
. This is a linear binomial.
is a cubic trinomial. In your original question, I'm not sure what the 
means.
