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Mathematics 15 Online
OpenStudy (anonymous):

so how do i find the surface area of a pyramid i'm so confused

OpenStudy (mahmood786123):

The Surface Area has two parts: the area of the base (the Base Area), and the area of the side faces (the Lateral Area). For Base Area : It depends on the shape, there are different formulas for triangle, square, etc. See Area for formulas, or our Area Calculation Tool For Lateral Area : When all the side faces are the same: Multiply the perimeter by the "slant length" and divide by 2. This is because the side faces are always triangles and the triangle formula is "base times height divided by 2" But when the side faces are different (such as an "irregular" pyramid) we must add up the area of each triangle to find the total lateral area.

OpenStudy (mahmood786123):

please give me a medal

OpenStudy (anonymous):

yeah but i still dont understand

OpenStudy (mahmood786123):

Ok il explain more

OpenStudy (anonymous):

what do i multiply what do i add my lesson made me all confused

jimthompson5910 (jim_thompson5910):

@mandymoo1121 do you have an example problem?

OpenStudy (mahmood786123):

This video should help

OpenStudy (anonymous):

i dont have an example

jimthompson5910 (jim_thompson5910):

ok let's say we had this pyramid |dw:1430787639324:dw|

jimthompson5910 (jim_thompson5910):

what is the area of the bottom face?

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