Answer:
12
Step-by-step explanation:
We must find the area of each cake's top.
Formula for area of a circle:
![A = \pi r^{2}](https://tex.z-dn.net/?f=A%20%3D%20%20%5Cpi%20%20r%5E%7B2%7D%20)
where r is the radius.
<span>small cake:
</span>Plug in 4 for r because the radius is 4. (They give us the diameter, which is 8, and the radius is half that)
![A = \pi 4^{2}](https://tex.z-dn.net/?f=A%20%3D%20%20%5Cpi%20%204%5E%7B2%7D%20)
A = 16π
<span>big cake:
</span>Repeat the process:
Plug in 12 for r because the radius is 12. (They give us the diameter, which is 24, and the radius is half that)
![A = \pi 12^{2}](https://tex.z-dn.net/?f=A%20%3D%20%5Cpi%2012%5E%7B2%7D%20)
A = 144π
So our two radii are 144π and 16π.
The large cake's top is not 3 times the area of the small cake's.
This makes sense because you are squaring the radius, which makes the fact that the larger cake's diameter is triple the smaller cake diameter irrelevant.
Hope this helped! ^-^
Answer: (-3,3)
Step-by-step explanation:
Answer:
mine too
Step-by-step explanation:
Given:
volume of larger cone : 8000 m³
radius of larger cone: 5 m
radius of smaller cone: 2 m
volume of smaller cone: ?
Find the volume of the smaller cone using the ratio of the volumes.
a / b = c / d where ad = bc
5m / 8000 m³ = 2 m / x
5m * x = 8000 m³ * 2m
5m * x = 16000 m⁴
x = 16000 m⁴ / 5m
x = 3200 m³