2 teachers = 30 girls (so 1 teacher = 15 girls)
3 teachers = 60 dudes (so 2 teachers = 40 dudes and 1= 20 boys)
380 boys + 19 teachers and 30 girls + 3 teachers
find the area of the base which is 8*8=64 in^2
then the triangles one is 2*[(6*4)/2)]= 24 in^2 and theres 4 of them so times 4
24*4=96 in^2
then add and u get 160 in^2