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Mathematics 44 Online
OpenStudy (anonymous):

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

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

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

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

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.

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

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.

OpenStudy (anonymous):

ok

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