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Dallasb22
 3 years ago
I need some help with Geometry, Finding Total Area in Prisms.
Dallasb22
 3 years ago
I need some help with Geometry, Finding Total Area in Prisms.

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johnsonshelby
 3 years ago
Best ResponseYou've already chosen the best response.1What is the question?

Dallasb22
 3 years ago
Best ResponseYou've already chosen the best response.0Find the Total Area of the Prism:

johnsonshelby
 3 years ago
Best ResponseYou've already chosen the best response.1Find the area of each side and add together... that's surface area I'm having a brain fart haha What is it you want to find?

Dallasb22
 3 years ago
Best ResponseYou've already chosen the best response.0I want to find total Area

johnsonshelby
 3 years ago
Best ResponseYou've already chosen the best response.1Rho as in density, right?

Dallasb22
 3 years ago
Best ResponseYou've already chosen the best response.0perimeter of the base times height of the prism + 2Base = Total Area

johnsonshelby
 3 years ago
Best ResponseYou've already chosen the best response.1Well the 2B part is easy. 2(area of the triangles)

Dallasb22
 3 years ago
Best ResponseYou've already chosen the best response.0Area of Triangle : 1/2 times 9 "correct" ?

johnsonshelby
 3 years ago
Best ResponseYou've already chosen the best response.11/2 time base of the triangle times the height of the triangle. Because you are only given the base, you need to find the height.

Dallasb22
 3 years ago
Best ResponseYou've already chosen the best response.0And to find the height we use pythag theorem correct?

johnsonshelby
 3 years ago
Best ResponseYou've already chosen the best response.1So your new base would be 1.5 and the hypo would still be 3, yep

Dallasb22
 3 years ago
Best ResponseYou've already chosen the best response.0So the height would be a^2?

johnsonshelby
 3 years ago
Best ResponseYou've already chosen the best response.1c= 3, b=1.5, and yep a= a

johnsonshelby
 3 years ago
Best ResponseYou've already chosen the best response.1so when you plug into pythag, you would get that

johnsonshelby
 3 years ago
Best ResponseYou've already chosen the best response.1I have to get to my orgo class in 10 minutes, can you take it from here?

Dallasb22
 3 years ago
Best ResponseYou've already chosen the best response.0So i find the area of the triangle and multiply it by 2 Then i add ?

johnsonshelby
 3 years ago
Best ResponseYou've already chosen the best response.1add that to the (perimeter of the base x height), which would be (3+3+3)(6)

Dallasb22
 3 years ago
Best ResponseYou've already chosen the best response.0Area of Triangle = 1.5√6.75 correct?

phi
 3 years ago
Best ResponseYou've already chosen the best response.0btw, people would write \[\sqrt{6.75} \] as \[ \frac{3 \sqrt{3}}{2}\]

Dallasb22
 3 years ago
Best ResponseYou've already chosen the best response.0Okay i got it. Thanks so much!! I just needed a refresh it's been awhile :)

Dallasb22
 3 years ago
Best ResponseYou've already chosen the best response.0So it would be 4.5√3 / 2 @phi ?

phi
 3 years ago
Best ResponseYou've already chosen the best response.0generally you don't mix decimals and fractions i.e. 4.5/2 If you have a multiple choice you probably would see the answer as a pure fraction \[ \frac{4}{9}\sqrt{3} \]

phi
 3 years ago
Best ResponseYou've already chosen the best response.0double that for the other triangle now you have 3 faces that all look the same size 3x6 3 faces each 18 = 54 plus the two triangles 8/9 sqrt(3)

phi
 3 years ago
Best ResponseYou've already chosen the best response.0you have two triangles (the ends) and 3 "side faces" right?
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