Answer:
![D=2\sqrt{\frac{A}{\pi}}](https://tex.z-dn.net/?f=D%3D2%5Csqrt%7B%5Cfrac%7BA%7D%7B%5Cpi%7D%7D)
Step-by-step explanation:
we know that
The area of the circle is equal to
![A=\frac{1}{4}\pi D^{2}](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B4%7D%5Cpi%20D%5E%7B2%7D)
where
D is the diameter of the circle
Solve for D
That means-----> Isolate the variable D
Multiply both sides by 4 to remove the fraction
![4A=\pi D^{2}](https://tex.z-dn.net/?f=4A%3D%5Cpi%20D%5E%7B2%7D)
Divide both sides by π
![\frac{4A}{\pi}=D^2](https://tex.z-dn.net/?f=%5Cfrac%7B4A%7D%7B%5Cpi%7D%3DD%5E2)
square root both sides
![\sqrt{\frac{4A}{\pi}}=D](https://tex.z-dn.net/?f=%5Csqrt%7B%5Cfrac%7B4A%7D%7B%5Cpi%7D%7D%3DD)
Rewrite
![D=\sqrt{\frac{4A}{\pi}}](https://tex.z-dn.net/?f=D%3D%5Csqrt%7B%5Cfrac%7B4A%7D%7B%5Cpi%7D%7D)
Simplify
![D=2\sqrt{\frac{A}{\pi}}](https://tex.z-dn.net/?f=D%3D2%5Csqrt%7B%5Cfrac%7BA%7D%7B%5Cpi%7D%7D)
Answer:
35
Step-by-step explanation:
So 280=1.4x so 280/1.4 is 200 .7*200 is 140 so $140
Answer:
fyni
Step-by-step explanation: