Answer:
Step-by-step explanation:
![A_{circle}=\pi r^2\\\\A=\pi r_{walkway}^2-\pi r_{fountain}^2\\\\A=\pi(20^2-16^2)=244\pi](https://tex.z-dn.net/?f=A_%7Bcircle%7D%3D%5Cpi%20r%5E2%5C%5C%5C%5CA%3D%5Cpi%20r_%7Bwalkway%7D%5E2-%5Cpi%20r_%7Bfountain%7D%5E2%5C%5C%5C%5CA%3D%5Cpi%2820%5E2-16%5E2%29%3D244%5Cpi)
use a calculator fo find the value
Rationalizing the denominator, simply means "getting rid of that pesky root at the bottom", and we do so by simply multiplying it by something to take it out, of course, we multiply the bottom, we have to also multiply the top,
![\bf \cfrac{4\sqrt{150}}{\sqrt{189x}}\cdot \cfrac{\sqrt{189x}}{\sqrt{189x}}\implies \cfrac{4\sqrt{150}\sqrt{189x}}{(\sqrt{189x})^2}\implies \cfrac{4\sqrt{(150)({189x})}}{189x}](https://tex.z-dn.net/?f=%5Cbf%20%5Ccfrac%7B4%5Csqrt%7B150%7D%7D%7B%5Csqrt%7B189x%7D%7D%5Ccdot%20%5Ccfrac%7B%5Csqrt%7B189x%7D%7D%7B%5Csqrt%7B189x%7D%7D%5Cimplies%20%5Ccfrac%7B4%5Csqrt%7B150%7D%5Csqrt%7B189x%7D%7D%7B%28%5Csqrt%7B189x%7D%29%5E2%7D%5Cimplies%20%5Ccfrac%7B4%5Csqrt%7B%28150%29%28%7B189x%7D%29%7D%7D%7B189x%7D)
The perimeter is 32
I'm having a little difficulty finding the area because I forgot how the get the height... if I knew the height I would tell you.
I am so sorry I can not help all the way.
but if you find the height Area= base (11) times height (?)
It is negative only when the number itself is negative.
hence, sometimes.
Answer:
Answer is 120
Step-by-step explanation: