Answer:
dividing is always the last step
Step-by-step explanation:
Given:
radius of cone = r
height of cone = h
radius of cylinder = r
height of cylinder = h
slant height of cone = l
Solution
The lateral area (A) of a cone can be found using the formula:
![A\text{ = }\pi rl](https://tex.z-dn.net/?f=A%5Ctext%7B%20%3D%20%7D%5Cpi%20rl)
where r is the radius and l is the slant height
The lateral area (A) of a cylinder can be found using the formula:
![A\text{ = 2}\pi rh](https://tex.z-dn.net/?f=A%5Ctext%7B%20%3D%202%7D%5Cpi%20rh)
The ratio of the lateral area of the cone to the lateral area of the cylinder is:
![\pi rl\text{ : 2}\pi rh](https://tex.z-dn.net/?f=%5Cpi%20rl%5Ctext%7B%20%3A%202%7D%5Cpi%20rh)
Canceling out, we have:
![\begin{gathered} =\frac{\pi rl}{2\pi rh} \\ =\text{ }\frac{l}{2h}\text{ or l:2h} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20%3D%5Cfrac%7B%5Cpi%20rl%7D%7B2%5Cpi%20rh%7D%20%5C%5C%20%3D%5Ctext%7B%20%7D%5Cfrac%7Bl%7D%7B2h%7D%5Ctext%7B%20%20or%20l%3A2h%7D%20%5Cend%7Bgathered%7D)
Hence the Answer is option B
Answer:
A. x=0
Step-by-step explanation:
x+20+10x=20+9x
cancel equal terms
x+10x+9x
add x to 10x
11x=9x
move variable to left
11x-9x=0
subtract 11x to 9x
2x=0
divide Both sides by 2
x=0
Answer:
0.0417
Step-by-step explanation:
Given the following;
p = 0.7, n=121
The sampling distribution of sample proportion will be approximately normal with mean
\mu_{\hat{p}}=p=0.7
and standard deviation
\sigma_{\hat{p}}=\sqrt{\frac{p(1-p)}{n}}=\sqrt{\frac{0.7\cdot 0.2}{121}}=0.0417
Check attachment for the curve diagram.
Answer:
9.48
Step-by-step explanation: