Surface area of a solid is the sum of all areas of the faces of the shape so if you have the net set up you will just have to find the area of each face and add them up!
Ok its like for rectangular prisim its the volume here is a formula V=lwh. There you go use that for anything i do k12 so message me if you need anything.
Ht of ceiling = 10 ft which is two-thirds of living rm ceiling Ht of living rm ceiling = 2/3x = 10 ft 2/3h = 10 ft 2/3h times 3/2 to solve for h = 10 times 3/2 h = 30/2 h = 15 ft
