Answer:
The shaded area is 
Step-by-step explanation:
we know that
The shaded area is equal to the area of the large square minus the area of the two smaller squares
so

---> expression that represent the shaded area
Calculate the shaded area
Remember that

substitute

3a, because both terms contain a, and 6 is divisible by 3
If the diameter is 18 inches, the radius is 9 inches. The formula for circumference is 2*pi*r, so it would be 2*3.14*9, so the circumference is 56.52 inches. But rounded to the nearest inch, it is 57 inches.
Answer:
(a). 11
(b). 16
Step-by-step explanation:
(a). 6=22
3=x solve for x doing 22(3)/6
(b). 6=22
24=x solve for x doing 22(24)/6
Answer: (0, -6)
Step-by-step explanation:
The center is the midpoint of the diameter, meaning that the coordinates of Y must be (0, -6).