Answer:
A = pi (15)^2
Step-by-step explanation:
The diameter is 30
The radius is 1/2 of the diameter
r = d/2 =30/2 = 15
The area of a circle is
A = pi r^2
A = pi (15)^2
A = 225 pi
Answer:
- <em><u>12 tickets</u></em>
Explanation:
You must assume that the ratio of the number of tickets in row 7 is a constant.
That permits you to set a proportion with the ratio of the number of tickets in row 7 for the first batch of tickets and the ratio of the number of tickets in row 7 for the next 33 tickets sent out:
<u>1. Ratio of number of tickets in row 7 for the first batch.</u>
- Number of tickets in row 7: 20
- Total number of tickets: 20 + 19 + 16 = 55
- Ratio: 20/55
<u>2. Ratio of number of tickets in row 7 in the next 33 tickets sent out:</u>
- Number of tickets in row 7: x
- Total number of tickets sent out: 33
- Ratio: x/33
<u>3. Proportion</u>
Set the proportion and solve for x:
![\dfrac{20}{55}=\dfrac{x}{33}\\\\\\20\times 33=55x\\\\\\ x=\dfrac{20\times 33}{55}\\ \\ \\ x=\dfrac{20\times 3}{5}\\ \\ \\ x=4\times 3\\ \\ \\ x=12](https://tex.z-dn.net/?f=%5Cdfrac%7B20%7D%7B55%7D%3D%5Cdfrac%7Bx%7D%7B33%7D%5C%5C%5C%5C%5C%5C20%5Ctimes%2033%3D55x%5C%5C%5C%5C%5C%5C%20x%3D%5Cdfrac%7B20%5Ctimes%2033%7D%7B55%7D%5C%5C%20%5C%5C%20%5C%5C%20x%3D%5Cdfrac%7B20%5Ctimes%203%7D%7B5%7D%5C%5C%20%5C%5C%20%5C%5C%20x%3D4%5Ctimes%203%5C%5C%20%5C%5C%20%5C%5C%20x%3D12)
Answer: 12 tickets
Answer:
A 9
Step-by-step explanation:
My reasoning is because a square is congruent on all sides so if one side is 9 the other side is 9 by default
correct answer is reflect ,