if we paint the tank on the outside, we'll be covering SA of surface area, however we're also painting it on the inside, so the area inside assuming the material thickness is negligible, we'll be covering SA as well, so we'll be needing SA + SA = 2SA ft² of paint to do the whole thing.
so, its diameter is 10, that means its radius is 5.
![\textit{surface area of a cylinder}\\\\ SA=2\pi r(h+r)~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ h=12\\ r=5 \end{cases}\implies \begin{array}{llll} SA=2\pi (5)(12+5)\implies SA=170\pi \\\\\\ \stackrel{\textit{twice as much}}{2SA=340\pi } \end{array}](https://tex.z-dn.net/?f=%5Ctextit%7Bsurface%20area%20of%20a%20cylinder%7D%5C%5C%5C%5C%20SA%3D2%5Cpi%20r%28h%2Br%29~~%20%5Cbegin%7Bcases%7D%20r%3Dradius%5C%5C%20h%3Dheight%5C%5C%5B-0.5em%5D%20%5Chrulefill%5C%5C%20h%3D12%5C%5C%20r%3D5%20%5Cend%7Bcases%7D%5Cimplies%20%5Cbegin%7Barray%7D%7Bllll%7D%20SA%3D2%5Cpi%20%285%29%2812%2B5%29%5Cimplies%20SA%3D170%5Cpi%20%5C%5C%5C%5C%5C%5C%20%5Cstackrel%7B%5Ctextit%7Btwice%20as%20much%7D%7D%7B2SA%3D340%5Cpi%20%7D%20%5Cend%7Barray%7D)
now, hmmm we know that 1 gallon can do 200 ft², how many gallons are there in 340π ft²?
![\begin{array}{ccll} gallons&ft^2\\ \cline{1-2} 1 & 200\\ x& 340\pi \end{array} \implies \cfrac{1}{x}~~=~~\cfrac{200}{340\pi } \\\\\\ 340\pi =200x\implies \cfrac{340\pi }{200}=x\implies \stackrel{gallons}{5.34}\approx x](https://tex.z-dn.net/?f=%5Cbegin%7Barray%7D%7Bccll%7D%20gallons%26ft%5E2%5C%5C%20%5Ccline%7B1-2%7D%201%20%26%20200%5C%5C%20x%26%20340%5Cpi%20%5Cend%7Barray%7D%20%5Cimplies%20%5Ccfrac%7B1%7D%7Bx%7D~~%3D~~%5Ccfrac%7B200%7D%7B340%5Cpi%20%7D%20%5C%5C%5C%5C%5C%5C%20340%5Cpi%20%3D200x%5Cimplies%20%5Ccfrac%7B340%5Cpi%20%7D%7B200%7D%3Dx%5Cimplies%20%5Cstackrel%7Bgallons%7D%7B5.34%7D%5Capprox%20x)
Answer:
(0, 4), (4, 2)
Step-by-step explanation:
Locate each point on the graph. If it is on the blue line, then it is a solution to the equation.
The solutions are:
(0, 4), (4, 2)
Answer:
4567_567189263
Step-by-step explanation:
936578916
Answer:700,000+80,000+4,000+200+20+9
Step-by-step explanation:
That should be the answer.
To solve this, you must follow PEMDAS. First, solve the parenthesis. Because a negative times a positive equals a negative, the product of the fractions is -1/6. Then multiply that by 12. That equals -12/6. This can be simplified down to -2.
If you need more help, comment below and I will do my best.