Posted by timmy on Wednesday, February 29, 2012 at 4:54pm.
The lateral surface area of a pyramid (the slanted sides) is the perimeter of the base P multiplied by the slant height H and divided by two, or
A(lateral) = PH/2
Finally multiply by the price per metre^2 to get the price.
so theres 4 sides to a pyramid does that mean each side is 18m?
Exactly!
The perimeter of the square base is therefore 4*18.
Useful information:
"18m x18m " is a short form for "each side of a square is 18m"
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