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Mathematics 15 Online
OpenStudy (anonymous):

The surface area of a triangular pyramid is 300 m2. If all the faces of the pyramid are congruent, what is the area of one face of this pyramid? A. 1200 m2 B. 900 m2 C. 75 m2 D. 100 m2

OpenStudy (anonymous):

this took hrs & still don`t know how to do this. Have wright answer from test but don`t know how they got it.

OpenStudy (anonymous):

do u know how to do this?

OpenStudy (sleepyhead314):

how many faces are there on a triangular pyramid? do you know? :)

OpenStudy (anonymous):

5.

OpenStudy (sleepyhead314):

not quite, you are thinking of a square pyramid :) here is a triangular pyramid it only has 4 faces |dw:1423514845805:dw|

OpenStudy (anonymous):

oh yea....nerves laugh

OpenStudy (sleepyhead314):

now, divide 300 by 4 what would you get? :)

OpenStudy (anonymous):

7.5

OpenStudy (sleepyhead314):

hmmm? try again 300 divided by 4

OpenStudy (anonymous):

oh 300 oops thought it was 30 at frist

OpenStudy (sleepyhead314):

yeah haha I believe the question gives the 300

OpenStudy (anonymous):

75

OpenStudy (sleepyhead314):

correct ^_^

OpenStudy (anonymous):

That it?

OpenStudy (anonymous):

have more.

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