Answer:
I'm pretty sure it's D
Step-by-step explanation:
....
Answer:
a = 60
Step-by-step explanation:
90 + 30 = 120
120 - 180 = 60
It'd be 9.096491 hope that helps.
Answer:
1. B) Figure B.
2. C) Figure C.
3. D) Figure D.
4. C) Figure C.
Step-by-step explanation:
Given: Radius of Circle A= 4
Radius of Circle B= 5
Radius of circle C= 6
Radius of circle D= 7
Now, finding circumference and area of all the circle.
We know, circumference of circle= ![2\pi r](https://tex.z-dn.net/?f=2%5Cpi%20r)
Area of circle= ![\pi r^{2}](https://tex.z-dn.net/?f=%5Cpi%20r%5E%7B2%7D)
Where, r= radius of circle and π = 3.14
First, solving for figure A
Circumference= ![2\times 3.14\times 4= 25.12\ cm](https://tex.z-dn.net/?f=2%5Ctimes%203.14%5Ctimes%204%3D%2025.12%5C%20cm)
Area= ![3.14\times 4^{2} = 50.24\ cm^{2}](https://tex.z-dn.net/?f=3.14%5Ctimes%204%5E%7B2%7D%20%3D%2050.24%5C%20cm%5E%7B2%7D)
Solving for Figure B
Circumference= ![2\times 3.14\times 6= 31.4\ cm](https://tex.z-dn.net/?f=2%5Ctimes%203.14%5Ctimes%206%3D%2031.4%5C%20cm)
Area= ![3.14\times 5^{2} = 78.5\ cm^{2}](https://tex.z-dn.net/?f=3.14%5Ctimes%205%5E%7B2%7D%20%3D%2078.5%5C%20cm%5E%7B2%7D)
Solving for Figure C
Circumference= ![2\times 3.14\times 6= 37.68\ cm](https://tex.z-dn.net/?f=2%5Ctimes%203.14%5Ctimes%206%3D%2037.68%5C%20cm)
Area= ![3.14\times 6^{2} = 113.04\ cm^{2}](https://tex.z-dn.net/?f=3.14%5Ctimes%206%5E%7B2%7D%20%3D%20113.04%5C%20cm%5E%7B2%7D)
Solving for Figure D
Circumference= ![2\times 3.14\times 7= 43.96\ cm](https://tex.z-dn.net/?f=2%5Ctimes%203.14%5Ctimes%207%3D%2043.96%5C%20cm)
Area= ![3.14\times 7^{2} = 153.86\ cm^{2}](https://tex.z-dn.net/?f=3.14%5Ctimes%207%5E%7B2%7D%20%3D%20153.86%5C%20cm%5E%7B2%7D)
∴ 1. Answer is Figure B.
2. Answer is figure C.
3. Answer is Figure D
4. Answer is Figure C.