M = 32/0.8
m = 320/8
m = 40
Rule: You see in my second step? You have to get rid of the decimal to make it a whole number. So keep on adding 0 to the 32 until you transform 0.8 to a whole number. Ionly added 0 once to 32 because I only have to move the decimal once to make 0.8 a whole number. Hi
Answer:
![A=6.33\ cm^2](https://tex.z-dn.net/?f=A%3D6.33%5C%20cm%5E2)
Step-by-step explanation:
step 1
Find the radius of the circle
we know that
The circumference of a circle is equal to
![C=2\pi r](https://tex.z-dn.net/?f=C%3D2%5Cpi%20r)
we have
![C=\frac{28}{3.14}\ cm](https://tex.z-dn.net/?f=C%3D%5Cfrac%7B28%7D%7B3.14%7D%5C%20cm)
![\pi=3.14](https://tex.z-dn.net/?f=%5Cpi%3D3.14)
substitute the values
![\frac{28}{3.14}=2(3.14)r](https://tex.z-dn.net/?f=%5Cfrac%7B28%7D%7B3.14%7D%3D2%283.14%29r)
![r=\frac{28}{19.7192}\ cm](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B28%7D%7B19.7192%7D%5C%20cm)
![r=1.42\ cm](https://tex.z-dn.net/?f=r%3D1.42%5C%20cm)
step 2
Find the area of the circle
The area of the circle is equal to
![A=\pi r^{2}](https://tex.z-dn.net/?f=A%3D%5Cpi%20r%5E%7B2%7D)
substitute the values
![A=(3.14)(1.42)^{2}](https://tex.z-dn.net/?f=A%3D%283.14%29%281.42%29%5E%7B2%7D)
![A=6.33\ cm^2](https://tex.z-dn.net/?f=A%3D6.33%5C%20cm%5E2)
12 would be the y intercept because x is 0 and y is 12
Answer:
$52.324
Step-by-step explanation: