The surface area of a triangular pyramid is 408 m2.

If all the faces of the pyramid are congruent, what is the area of one face of this pyramid?

A.
68 m2

B.
136 m2

C.
51 m2

D.
102 m2

Question

The surface area of a triangular pyramid is 408 m2. 
 
If all the faces of the pyramid are congruent, what is the area of one face of this pyramid?
 
 A.
68 m2
 
 B.
136 m2
 
 C.
51 m2
 
 D.
102 m2

x__hazel__x · Answer

@Hero @ganeshie8 can you help? :3

jabez177 · Answer

To calculate the area of the base of the pyramid, use the formula that is appropriate for that shape. Example 1: The pyramid at right has a square base with sides of length 10 units. The lateral faces are four congruent triangles with a height of 15 units.
SURFACE AREA OF A PYRAMID Examples
pdfs.cpm.org/state_supplements/Surface_Area_Of_A_Pyramid.pdf

jabez177 · Answer

I forgot how to do these... It's been a while...

jabez177 · Answer

http://pdfs.cpm.org/state_supplements/Surface_Area_Of_A_Pyramid.pdf

x__hazel__x · Answer

wow! Thank you!