Answer:
51.92 square inches
Step-by-step explanation:
Area of a circle = (pi)(r^2)
if the diameter is 7, the radius is 3.5
A = 3.14 x 3.5
A = 10.99 cm^2 for one cookie
10.99 x 12 for a dozen = 131.88 cm^2
converting cm to inches, you divide by 2.54
131.88/2.54 = 51.92 square inches.
LMK if you have questions.
A&d i think.. but basically the equation needs to be modeled where the answer will be a 14° difference
Answer:
1/8
Step-by-step explanation:
I looked it up lol
Answer:
![Perimeter = 12y](https://tex.z-dn.net/?f=Perimeter%20%3D%2012y)
Step-by-step explanation:
Given
-- two rectangles
Required
Determine the perimeter of one of the rectangles
First, calculate the area (A) of 1 rectangle
![A =\frac{1}{2}Area](https://tex.z-dn.net/?f=A%20%3D%5Cfrac%7B1%7D%7B2%7DArea)
![A =\frac{1}{2}(18y^2 - 8)](https://tex.z-dn.net/?f=A%20%3D%5Cfrac%7B1%7D%7B2%7D%2818y%5E2%20-%208%29)
![A =9y^2 - 4](https://tex.z-dn.net/?f=A%20%3D9y%5E2%20-%204)
Express as difference of two squares
![A =(3y - 2)(3y+2)](https://tex.z-dn.net/?f=A%20%3D%283y%20-%202%29%283y%2B2%29)
Area is calculated as:
![A = Length * Width](https://tex.z-dn.net/?f=A%20%3D%20Length%20%2A%20Width)
So, by comparison:
![Length = 3y - 2](https://tex.z-dn.net/?f=Length%20%3D%203y%20-%202)
![Width = 3y + 2](https://tex.z-dn.net/?f=Width%20%3D%203y%20%2B%202)
The perimeter is:
![Perimeter = 2 *(Length + Width)](https://tex.z-dn.net/?f=Perimeter%20%3D%202%20%2A%28Length%20%2B%20Width%29)
![Perimeter = 2 *(3y-2+3y+2)](https://tex.z-dn.net/?f=Perimeter%20%3D%202%20%2A%283y-2%2B3y%2B2%29)
Collect Like Terms
![Perimeter = 2 *(3y+3y-2+2)](https://tex.z-dn.net/?f=Perimeter%20%3D%202%20%2A%283y%2B3y-2%2B2%29)
![Perimeter = 2 *(6y)](https://tex.z-dn.net/?f=Perimeter%20%3D%202%20%2A%286y%29)
![Perimeter = 12y](https://tex.z-dn.net/?f=Perimeter%20%3D%2012y)