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Mathematics 10 Online
OpenStudy (anonymous):

What is the surface area of a triangular pyramid if each face has an area of 30 mm2

OpenStudy (anonymous):

@nikato

OpenStudy (nikato):

what do you think?

OpenStudy (anonymous):

idk

OpenStudy (nikato):

|dw:1421633353579:dw| how many faces does a triangular pyramid have?

OpenStudy (anonymous):

4

OpenStudy (nikato):

and since we know each face has an area of 30, just multiply 30x4=?

OpenStudy (anonymous):

120

OpenStudy (nikato):

yes

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