Answer:
A
Step-by-step explanation:
we need to subtract half of the area of the circle from the area of the square to get the area of the shape on the picture.
Therefore a²-πb²/2 is the correct answer
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Answer:
OR 
Step-by-step explanation:
So first you find the difference between the new cost and the old cost:
450 - 370 = 80
So the increase was 80.
When you write it as a fraction you write the increase ( 80 ) over the starting cost ( 370 ).
Thus the answer becomes 
But you can always reduce it to its lowest terms thus:

HOPE THIS HELPED
The product of 2/3 X 21 is 14 and that is in simplest form
Answer:

Step-by-step explanation:
Once we know the diameter of the circle, we can figure out the problem.
The diameter of the circle = The diagonal of the rectangle inscribed in the circle
To find the diagonal of the rectangle, we can use a formula.

The width is 10 cm and the length is 12 cm.


The diagonal of the rectangle inscribed in the circle is 15.62 cm.
The diameter of the circle is 15.62 cm.
Find the area of the whole circle.

The
is the radius of the circle, to find radius from diameter we can divide the value by 2.



Let’s find the area now.


Find the area of rectangle.

Length × Width.


Subtract the area of the whole circle with the area of rectangle to find area of shaded part.


Answer:
20
Step-by-step explanation:
Work backwards. If -2 x 2= -4 then something plus negative four will equal 16, which is 20.