Answer:
See Explanation
Step-by-step explanation:
![A = \pi {r}^{2} \\ \\ \frac{A}{\pi} = {r}^{2} \\ \\ \huge \red{ \boxed{ r = \sqrt{\frac{A}{\pi} } }}](https://tex.z-dn.net/?f=A%20%3D%20%5Cpi%20%7Br%7D%5E%7B2%7D%20%20%5C%5C%20%20%5C%5C%20%20%5Cfrac%7BA%7D%7B%5Cpi%7D%20%20%3D%20%20%7Br%7D%5E%7B2%7D%20%20%5C%5C%20%20%5C%5C%20%5Chuge%20%5Cred%7B%20%5Cboxed%7B%20r%20%3D%20%20%5Csqrt%7B%5Cfrac%7BA%7D%7B%5Cpi%7D%20%20%7D%20%7D%7D)
280 divided by 7 = 40 pages every night
(28/7=4, add a zero)
Answer:
v = 17.4 meters
Step-by-step explanation:
This is a triangle with height (red dotted line) given.
The area of a triangle is given by the formula:
![A=\frac{1}{2}bh](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B2%7Dbh)
Where
A is the area
b is the base length
h is the height
Given height = 12, and
area = 104.4
THe base is labeled as "v", so we find v by replacing into formula:
![A=\frac{1}{2}bh\\104.4=\frac{1}{2}(v)(12)\\104.4=6v\\v=\frac{104.4}{6}\\v=17.4](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B2%7Dbh%5C%5C104.4%3D%5Cfrac%7B1%7D%7B2%7D%28v%29%2812%29%5C%5C104.4%3D6v%5C%5Cv%3D%5Cfrac%7B104.4%7D%7B6%7D%5C%5Cv%3D17.4)
The base, v, is 17.4 meters
Answer:
the answer is the third one. I calculated the work on my phone and also did it on paper to check and make sure my work was correct!
Step-by-step explanation: