Find the lateral area, total area, and volume of the regular pyramid.

Question

anonymous · Answer

attachment

jdoe0001 · Answer

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jdoe0001 · Answer

anyhow, as you can see, you have 2 right-triangles on the triangular face of the pyramid
the base is 3, the height of it is 5

so.... what do you think is the area of each right-triangle?

anonymous · Answer

ok is the area b*h/2?

jdoe0001 · Answer

the lateral area will be, all 4 triangular faces areas SUMMED  UP, excluding the base
the total area will be, all including the base, which is the rectangle at the bottom

and the volume of a pyramid will be $\bf \cfrac{1}{3}\cdot \textit{rectangular base area}\cdot height$

jdoe0001 · Answer

@Exr0sis    right, the area of a triangle is bh/2

anonymous · Answer

ahhh. ok

anonymous · Answer

alright, thanks for the help mate!

jdoe0001 · Answer

do you know how to get the height of the pyramid?    btw it isn't 5, 5 is just the "slant heihgt"|dw:1401052704218:dw|

anonymous · Answer

no...