Formula for volue of cylinder is area time height. Lets find area
A=
![\pi r^2](https://tex.z-dn.net/?f=%20%5Cpi%20r%5E2)
diameter=2r
8=2r
r=4
Now substitute r to
![A= \pi r^2](https://tex.z-dn.net/?f=A%3D%20%5Cpi%20r%5E2)
A=
![\pi 4^2= 16\pi](https://tex.z-dn.net/?f=%20%5Cpi%204%5E2%3D%2016%5Cpi%20)
Now we have formula
V=
![16 \pi *height=16 \pi *9=144 \pi](https://tex.z-dn.net/?f=16%20%5Cpi%20%2Aheight%3D16%20%5Cpi%20%2A9%3D144%20%5Cpi%20)
- its the result, so B
Answer:
4kg : 45 x 4 + 20 = 200 minutes
5.5kg: 40 x 5.5 = 220 minutes
8kg: 35 x 8 = 280 minutes
The cooking time is directly proportional to weight in Turkey C
Hope this helps
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Assuming this is a system of equations, here is how to find x.
2x + 3y = 45
x + y = 10
Multiply x + y = 10 by 2 so you are able to use the elimination method.
2x + 3y = 45
2x + 2y = 20
Subtract.
y = 25
Now that we've found y, we can plug it in to find x.
x + 25 = 10
Subtract 25 from both sides.
x = -15