No 27, tolong cpt ya soalnya dikmpul bsk. Makasi ^_^

L = (2.La) + (Ka.t prisma)
L = (2.(5+17)x5/2)) + ([13+17+5+5].25)
L = (2.55) + (40.25)
L = 110 + 1000
L = 1110 cm^2 (C)

kalo kurang jelas tanya aja