Answer:
1/2
Step-by-step explanation:
1/2*1*1= 1/2
![3 \frac{1}{2}](https://tex.z-dn.net/?f=3%20%5Cfrac%7B1%7D%7B2%7D%20)
= 3.5, so 75 - 3.5 = 71.5, and 71.5 =
![71 \frac{1}{2}](https://tex.z-dn.net/?f=71%20%5Cfrac%7B1%7D%7B2%7D%20)
so your answer is
![71 \frac{1}{2}](https://tex.z-dn.net/?f=71%20%5Cfrac%7B1%7D%7B2%7D%20)
. I hope this helps. :D
Answer:
Step-by-step explanation:
<u>Entire area is the sum of areas of sections:</u>
- A = 1/2 + 1/2 + 1 + 1/2 + 1/2 =
- 1+ 4*1/2 =
- 1 + 2 =
- 3 sq. units
(side note: your formula C = 2πr^2 is incorrect, it should be C = 2πr)
Answer:
r = 9
Step-by-step explanation:
First let's find the circumference of Circle A. To use the formula we need radius. Since we have a diameter just divide by 2 to get radius. 27 / 2 = 13.5
Now plug that into C = 2πr: 2π*(13.5) = 27π
The question says that the area of circle B is 3x this value, so Circle B's area must be: 27π * 3 = 81π
Now plug that into A = πr^2 and solve for r:
![81\pi=\pi r^{2}\\81=r^{2}\\\sqrt{81}=r\\9=r](https://tex.z-dn.net/?f=81%5Cpi%3D%5Cpi%20r%5E%7B2%7D%5C%5C81%3Dr%5E%7B2%7D%5C%5C%5Csqrt%7B81%7D%3Dr%5C%5C9%3Dr)
(edited to correct a brain fart)