Answer:
Diameter = 14 cm
Circumference = 44 cm
Step-by-step explanation:
- Area of circle = πr²
- Diameter = 2r
- Circumference = 2πr = πd
- π ≈ 3.142
![\pi {r}^{2} = 154 \\ {r}^{2} = \frac{154}{\pi} \\ r = \sqrt{ \frac{154}{\pi} } \: cm](https://tex.z-dn.net/?f=%5Cpi%20%20%7Br%7D%5E%7B2%7D%20%20%3D%20154%20%5C%5C%20%20%7Br%7D%5E%7B2%7D%20%3D%20%20%5Cfrac%7B154%7D%7B%5Cpi%7D%20%20%5C%5C%20r%20%3D%20%20%20%5Csqrt%7B%20%5Cfrac%7B154%7D%7B%5Cpi%7D%20%7D%20%20%5C%3A%20cm)
![Diameter = 2r \\ = 2 \sqrt{ \frac{154}{3.142} } \\ ≈ 14 \: cm](https://tex.z-dn.net/?f=Diameter%20%3D%202r%20%5C%5C%20%20%3D%202%20%5Csqrt%7B%20%5Cfrac%7B154%7D%7B3.142%7D%20%7D%20%20%5C%5C%20%20%20%E2%89%88%2014%20%5C%3A%20cm)
![Circumference = πd \\ = 14\pi \\ = 14 \times 3.142 \\ = 43.988 \\ ≈ 44 \: cm](https://tex.z-dn.net/?f=Circumference%20%3D%20%CF%80d%20%5C%5C%20%20%3D%2014%5Cpi%20%5C%5C%20%20%3D%2014%20%5Ctimes%203.142%20%5C%5C%20%20%3D%2043.988%20%5C%5C%20%E2%89%88%2044%20%5C%3A%20cm)
Answer:
A)2% B)15 more *DID NOT DO C*
Step-by-step explanation:
A)
32+24+20+18+4 (add up the percentages)
=98%
100-98 (find what percentage of people did NOT like the given colors)
=2%
B)
24% of 250 (we want people, not percent)
=60
18% of 250 (Again, people, not percent)
=45
60-45 (we want the difference between the two=subtract)
=15 (15 more people preferred white, rather than black)
I feel sorry for but don't worry sometimes people fail but it's ok because I fail to not everyone get's good grades
Take out the 3 , to make the vertex form easier;)
Ok so descend means to go down and ascend means going up. With that in mind, you know what operations to use. You start at -170 and then climb up 72 feet. 170-72= 98. Now you drop -88. 98-88=10 go up 40 next 10+40= 50. Lastly, you go up by 50 feet. 50+50=100 which means your current elevation is 100 feet. I hope this helps you :)