50 points another area problem

D

Step-by-step explanation:

Area of the whole thing= 11*4.2= 46.2

Area of the circle= 2.1^2*pi= 13.8544236023

46.2-13.8544236023=32.3455763977

D

D

Step-by-step explanation:

area of rectangle

= 11*4.2

=46.2

area of circle

radius= 4.2/2= 2.1

Area= π r²

π(2.1)^2

13.85

Area of shaded region= 46.2-13.85

32.35 cm^2

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.