WILL MEDAL AND FAN

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WILL MEDAL AND FAN

Mathematics
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http://prntscr.com/7fb5c4 <-- Prism
Ok, so surface area is literally just the total area of all of the surfaces. You can use the formula \[\large (base *2)+(perimeter*height)\] The base is the base area, the perimeter is the perimeter of the base, and the height is the size of the side adjacent to the base.
Note: The base that you use in surface area formulas is going to be the side that appears on two sides. In this case, the base is the triangle.

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Hello? Are you there? @MalhotraChandra
Sorry I'm here now
So the surface area is 58.49?
Can you tell me how you got that?
I added them up
Well what did you get for the base?
18??
Oh wait no 27
I'm so confused
Well the formula for the area of a triangle is \[\large A=\frac{1}{2}*height*base\] For this triangle is the height is 3 and the base is 9.|dw:1433942233346:dw|
So 13.5?
Right. Now put 13.5 in as the "base" in the surface area formula. \[\huge 2*base=?\]
27!
I could've gotten that by multiplying 9 and 3 though right? Or do I have to use the formula?
Right. So that's the first half of the formula done. Now we have to figure out the perimeter and the height. Can you find the perimeter of the triangle?
9.49?
And that was because we were multiply the triangle area formula by 2 which will look like \[\large 2*\frac{1}{2}*3*9\] Yes, the 2 and 1/2 are going to cancel out.
|dw:1433942566392:dw| Add the sides together so \[\large 3+9+9.49=~?\]
Give me asecond to grab a piece of paper this is too confusing
What about the 37? That doesn't get added in?
That is going to be the "height" in the formula.
21.49
Ok, so now, we're gonna multiply the perimeter (21.49) and the height (37). So \[\large 21.49*37=~?\]
795.13
Ok. That right there is going to be your lateral area. So 795 is the later area. To get the surface area, add on the bases. So \[\large (27)+(795)=~?\]
822
So that's it??
Ok. So now you have your answers \[\huge LA=795\\\huge SA=822\]
And yeah, that would be it.
Wow ok that made a whole lot more sense than when my teacher explained it... It's still hard and confusing but I think that could change with a bit of practice.. Thank you very very much for your time!!
\[\huge \color{aqua}N\color{fuchsia}o \space \color{lime}P \color{orange}r \color{blue}o \color{maroon}b \color{red}l \color{olive}e \color{purple}m \color{gray}: \color{black})\]

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