Use formulas to find the lateral area and surface area of the given prism. Round your answer to the nearest whole number.
322 m^2; 327 m^2
296 m^2; 342 m^2
296 m^2; 332 m^2
322 m^2; 332 m^2
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OpenStudy (anonymous):
OpenStudy (anonymous):
I know it is very much the same but it is a different shape from the last one so I was not sure how to do it
terenzreignz (terenzreignz):
From your choices, I guess I can infer what lateral area means... but more on that later...
For now, what's the total area of all the faces? That'll be your surface area.
OpenStudy (anonymous):
2 ( 5 + 140.14 + 52)
OpenStudy (anonymous):
I think that is right
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terenzreignz (terenzreignz):
the 140.14 should not be doubled-- there is only one face with that area.
Remember that this is no longer a rectangular prism.
OpenStudy (anonymous):
ok so then what should it look like because I have no Idea
OpenStudy (anonymous):
2 (5) + 140.14 + 2(52) is that it
terenzreignz (terenzreignz):
You seem to have forgotten the area of the bottom rectangle.
terenzreignz (terenzreignz):
also, 52 should not be doubled-- once again, there is only one rectangle with that area
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OpenStudy (anonymous):
it is 130 for the bottom rectangle
terenzreignz (terenzreignz):
Yes, indeed.
OpenStudy (anonymous):
so then that gives me
2 (5) + 140.14 + 52 + 130
terenzreignz (terenzreignz):
yes. Add those up.
OpenStudy (anonymous):
332.14 or 332
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terenzreignz (terenzreignz):
once again narrowing it down to two choices.
Now the lateral area just removes the area of the base, and there is only one base, the bottom rectangle.
OpenStudy (anonymous):
so 332.14 - 130
terenzreignz (terenzreignz):
Yup
OpenStudy (anonymous):
202.14 or 202
terenzreignz (terenzreignz):
apparently not in your choices... hang on.
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terenzreignz (terenzreignz):
Okay, I have reason to believe that the bases are the two triangles...
terenzreignz (terenzreignz):
So take away their area.
OpenStudy (anonymous):
ok so 332.14 - 10
terenzreignz (terenzreignz):
Yeah.
OpenStudy (anonymous):
322.14 or 322
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terenzreignz (terenzreignz):
mhmm
OpenStudy (anonymous):
ok I have 2 more questions do you think you could help me with those 2
terenzreignz (terenzreignz):
I have to go in a few minutes.
OpenStudy (anonymous):
in a different question of course
terenzreignz (terenzreignz):
Sorry I can't stay much longer. Post the questions, I'll see if I can speed you through them.
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