The surface area of this pyramid is 189 cm^2The area of the square base is 49 cm^2 . What is the area of one triangular face of the lateral surface? Show the steps of your solution and explain your work.

Question

The surface area of this pyramid is  189 cm^2The area of the square base is 49 cm^2 . What is the area of one triangular face of the lateral surface? Show the steps of your solution and explain your work.

anonymous · Answer

attachment

kainui · Answer

How many triangular faces does the pyramid have?

kainui · Answer

^hint

anonymous · Answer

5?

kainui · Answer

No, it has 4 triangle faces and 1 square face.

kainui · Answer

Are all the triangle faces the same area?

anonymous · Answer

Yes?

kainui · Answer

So if you know the area of all the faces put together and the area of the square face, how might you find the area of all the triangle faces put together?

anonymous · Answer

I have no idea, that's why I posted the question here. I have to leave soon, so please hurry! :)

kainui · Answer

|dw:1345066552171:dw|