The answer for this is m
=
5.436564
v
2
?
Let the original bill be
![x](https://tex.z-dn.net/?f=x)
, then the final bill after the charges been added are
![1.2x+25](https://tex.z-dn.net/?f=1.2x%2B25)
, where
![1.2](https://tex.z-dn.net/?f=1.2)
is the increase in the bill by 0.2 (100%+20% = 120% = 1.2)
The range of the original bill is
200 <
![1.2x+25](https://tex.z-dn.net/?f=1.2x%2B25)
< 800, subtract each term by 25
175 <
![1.2x](https://tex.z-dn.net/?f=1.2x)
< 775, divide each term by
![1.2](https://tex.z-dn.net/?f=1.2)
145.83 <
![x](https://tex.z-dn.net/?f=x)
< 645.83
Hence, the range of the original bill is between $145.83 and $645.83
Answer:
67
Step-by-step explanation:
took the test
Diameter of cone = d = 4mm
So,
Radius of cone = r = 2mm
Slant Height = l = 6mm
Surface Area = A = ?
The formula for the surface area of cone is:
![A= \pi r(r+l)](https://tex.z-dn.net/?f=A%3D%20%5Cpi%20r%28r%2Bl%29)
Using the values, we get:
![A= \pi (2)(2+6)=16 \pi](https://tex.z-dn.net/?f=A%3D%20%5Cpi%20%282%29%282%2B6%29%3D16%20%5Cpi%20)
mm²
Therefore, the surface area of the cone with diameter 4mm and slant height of 6mm will be 16π mm²