The formula of the area of a circle is :
![A= \pi R^2](https://tex.z-dn.net/?f=A%3D%20%5Cpi%20R%5E2)
You know that the area is 1256.
So :
![1256= \pi R^2](https://tex.z-dn.net/?f=1256%3D%20%5Cpi%20R%5E2)
Divide both sides by
![\pi](https://tex.z-dn.net/?f=%20%5Cpi%20)
:
![\frac{1256}{\pi}=R^2](https://tex.z-dn.net/?f=%20%5Cfrac%7B1256%7D%7B%5Cpi%7D%3DR%5E2)
<span> take the square root of both sides in order to obtain r :
</span>
![\sqrt{ \frac{1256}{ \pi }}=R](https://tex.z-dn.net/?f=%5Csqrt%7B%20%5Cfrac%7B1256%7D%7B%20%5Cpi%20%7D%7D%3DR)
![20=R](https://tex.z-dn.net/?f=20%3DR)
<span>
In short, the answer would be 20 (i have rounded).
Hope this helps !
Photon
</span>
The pattern in this is
![n*(x+1)](https://tex.z-dn.net/?f=n%2A%28x%2B1%29)
, where n is the previous number in the sequence and x is the number you multiplied a number by to get the previous number. You start with twelve times two, then increase the number you multiply by by one.
![12*2=24 \\ 24*3=72 \\ 72*4=288](https://tex.z-dn.net/?f=12%2A2%3D24%20%5C%5C%2024%2A3%3D72%20%5C%5C%2072%2A4%3D288)
![n*(x+1) \\ 288*(4+1) \\ 288*5 \\ 1440](https://tex.z-dn.net/?f=n%2A%28x%2B1%29%20%5C%5C%20288%2A%284%2B1%29%20%5C%5C%20288%2A5%20%5C%5C%201440)
The next number in the sequence is
1440.
Answer:
2 l think
Step-by-step explanation:
Answer:
the answer is B
Step-by-step explanation: