<h3>
Answer: n^2 + 1</h3>
Explanation:
Imagine that you cross out the top-most square for each step of each diagram. The squares not crossed out have the following counts: 1, 4, 9
This is the sequence of perfect squares. So the rule will have us take the number n, and square it to get n^2. Then we add on the squares we crossed out earlier. This explains the "plus 1" at the end to get the answer of n^2+1
Answer:
120 rounding
Step-by-step explanation:
Answer:
Area:
![36\pi - 72 \: cm {}^{2}](https://tex.z-dn.net/?f=36%5Cpi%20-%2072%20%5C%3A%20cm%20%7B%7D%5E%7B2%7D%20)
Step-by-step explanation:
![( \frac{1}{4} \times \pi \times 12 {}^{2} ) - ( \frac{1}{2} \times 12 \times 12) = 36\pi - 72](https://tex.z-dn.net/?f=%28%20%5Cfrac%7B1%7D%7B4%7D%20%20%5Ctimes%20%5Cpi%20%5Ctimes%2012%20%7B%7D%5E%7B2%7D%20%20%29%20%20-%20%28%20%5Cfrac%7B1%7D%7B2%7D%20%20%5Ctimes%2012%20%5Ctimes%2012%29%20%3D%2036%5Cpi%20-%2072)
Area of the blue area:
![36\pi - 72 \: cm {}^{2}](https://tex.z-dn.net/?f=36%5Cpi%20-%2072%20%5C%3A%20cm%20%7B%7D%5E%7B2%7D%20)
Perimeter of blue area:unsure as no numbers are given for the slanted side if the triangle.
Answer:
60
Step-by-step explanation:
135 = (2x+15)
120 = 2x
x = 60
Answer:
Yup, 27 is correct!
Step-by-step explanation:
5(7)-8
= 35 - 8
= 27