![(x - 4) {}^{2} + (y - 1) {}^{2} = r {}^{2}](https://tex.z-dn.net/?f=%28x%20-%204%29%20%7B%7D%5E%7B2%7D%20%20%2B%20%28y%20-%201%29%20%7B%7D%5E%7B2%7D%20%20%3D%20r%20%7B%7D%5E%7B2%7D%20)
passes through ( 4 , -4 )
![(4 - 4) {}^{2} + ( - 4 - 1) {}^{2} = r {}^{2}](https://tex.z-dn.net/?f=%284%20-%204%29%20%7B%7D%5E%7B2%7D%20%20%2B%20%28%20-%204%20-%201%29%20%7B%7D%5E%7B2%7D%20%20%3D%20r%20%7B%7D%5E%7B2%7D%20)
![r {}^{2} = ( - 5) {}^{2}](https://tex.z-dn.net/?f=r%20%7B%7D%5E%7B2%7D%20%20%3D%20%28%20-%205%29%20%7B%7D%5E%7B2%7D%20)
![r {}^{2} = 25](https://tex.z-dn.net/?f=r%20%7B%7D%5E%7B2%7D%20%20%3D%2025)
![r = \sqrt{25} = 5](https://tex.z-dn.net/?f=r%20%3D%20%20%5Csqrt%7B25%7D%20%20%3D%205)
Your radius is 5 units
![c = 2\pi \: r \\ c = 2 \times 3.14 \times 5 \\ c = 31.4](https://tex.z-dn.net/?f=c%20%3D%202%5Cpi%20%5C%3A%20r%20%5C%5C%20c%20%3D%202%20%5Ctimes%203.14%20%5Ctimes%205%20%5C%5C%20%20c%20%3D%2031.4)
<h2>
To Draw:</h2>
Place your center at the point x=4 and y=1
Then take your radius 5 units by going straight down left right or up by 5 units
AND DRAW
You weren't clear on the equation so I did it both ways. It didn't really matter though because both equations had the same answer. ♀️
Pretty sure 40. i think its 40 because 120 divided by 80 is 1.5 which is half. so 80 divided by 2 = 40. not sure tho
Answer:
It simply means getting rid of the square root or radical in the denominator
Step-by-step explanation:
Rationalizing the denominator simply means getting rid of the square root or radical symbol in the denominator thereby making the denominator to be just a whole number.
For example if we want to rationalize the denominator in; 3/√2
We will multiply the numerator and the denominator by √2 to get rid of the radical in the denominator which is the square root sign.
Thus;
(3/√2) × (√2)/(√2)
This gives;
(3√2)2
Answer:
3.6 cm²
Step-by-step explanation:
It's a trapezium
So area
=(2.4+1.6)/2 ×1.8 cm²
4/2×1.8 cm²
2×1.8 cm²
3.6 cm²