Find the lateral area the regular pyramid.
https://media.glynlyon.com/g_geo_2013/8/groupi78.gif

Question

Find the lateral area the regular pyramid.
https://media.glynlyon.com/g_geo_2013/8/groupi78.gif

unklerhaukus · Answer

can you find the area of on of those triangles ?

anonymous · Answer

the base would be 6

unklerhaukus · Answer

is there any other information with this problem? i'm not sure how we can find the other sides of the triangle

anonymous · Answer

this is all it gives me

unklerhaukus · Answer

what are the properties of a 'regular' pyramid

anonymous · Answer

i am not sure :/

unklerhaukus · Answer

i found this special formula for regular pyramid surface areas

unklerhaukus · Answer

$$L.S.A.=1/2 \times P \times l$$

where $L.S.A.$ is the lateral surface area

$P$ is the permitter of the base, 

$l$ is the slant height

unklerhaukus · Answer

|dw:1382361942864:dw|

anonymous · Answer

alright

unklerhaukus · Answer

|dw:1382361967811:dw|

unklerhaukus · Answer

but you have to find $l$

anonymous · Answer

l would be a bit more than the height i know that but im not sure what it actually is

unklerhaukus · Answer

|dw:1382362044754:dw|

unklerhaukus · Answer

the only thing i can think of is if a regular pyramid has some property that says 
something about the base

unklerhaukus · Answer

|dw:1382362255043:dw|
maybe r=8?  or 6?,