What is the formula to find the total area of a pyramid?

Question

anonymous · Answer

Do you mean the volume?

anonymous · Answer

Nope I mean Total Area

anonymous · Answer

@jim_thompson5910

anonymous · Answer

Well a pyramid is a 3D shape so you can't find the total area of it..

anonymous · Answer

A pyramid has a square base with sides 8" and a slant height of 5".

Total Area =




thats what my question says -.-

anonymous · Answer

It could mean surface area, because with 3D shapes you can find the surface area of its sides and the volume. But I'm sorry that I can't help

jim_thompson5910 · Answer

The base is this square

|dw:1365735018241:dw|

which has an area of 8*8 = 64 square inches

jim_thompson5910 · Answer

each triangular face looks like this

|dw:1365735054428:dw|

so each triangular face has an area of 8*5/2 = 40/2 = 20 square inches

there are 4 triangular faces that are congruent, so the lateral surface area is 4*20 = 80 square inches

jim_thompson5910 · Answer

the total surface area is then

Total Surface Area = (Base Area) + (Lateral Surface Area)

Total Surface Area = (64) + (80)

Total Surface Area = 144 square inches

anonymous · Answer

Thank you (:

jim_thompson5910 · Answer

yw