Question

Find the lateral area for a regular pyramid

Answer 1

https://media.glynlyon.com/g_geo_2013/8/groupi74.gif

Answer 2

hiya @Synthia

Answer 3

hello

Answer 4

so "lateral area... "is that the outside surface area?
or just outside area that doesnt include base?

Answer 5

it includes half the base I think

Answer 6

im... not so sure... but ok, so lets just work out the whole surface area, and u can see which one fits at the end?

Answer 7

Alright

Answer 8

L.A. = 1/2 pl thats what it wants

Answer 9

sweet, so the base by itself is a square, so 2x2 = 4 ...meters, kilometers, square feet, whatever ur units are really

Answer 10

I got 3 sqrt(10)

Answer 11

but it was partially correct

Answer 12

so 1/2 x perimeter x slant length = L Surface area?
so slant length = sqrt (3^2 + 1^2) = sqrt 10
so L. SA = 1/2 x 2+2+2+2 x sqrt 10
= 4 x sqrt 10
= 12.65 ish

Answer 13

is that how u did it?

Answer 14

Yah but some how i got 10 and needed to make it fit to _sqrt_ _

Answer 15

so sqrt 10 is correct
then ur perimeter: = 8
so 1/2 x 8 x sqrt 10
= 4 x sqrt 10

Answer 16

so i think we've got it, yeah?

Answer 17

Yes! thank you :))

Answer 18

sweet, no worries hey, slaters !