The roof of a building is shaped like a square pyramid, with a base of 18m by 18m. If the slant height of the roof is 12m and roofing costs 5.75m2, how much will it cost for roofing material?

Question

if the pyramid has 4 sides does each side have 18m?

Answer 1

You have four triangles of base 18 and altitude 12
area = 4 * (1/2) * 18 * 12

multiply area by 5.75 to get cost

Answer 2

area roof= 4*1/2 * 18*12

cost= area * $5.72 That is pretty cheap roofing, about 50cents/square foot.

Answer 3

thanks