hi,

i need to work out the total surface area of this prism:

i know its not draw well but it gets the point across. i was going to divide it up into 3 parts and times the final answer by 3 because there are 3 parts.

however i don't know how to work out the surface area of a cuboid but i know it would contain the length of 8cm, width 3cm and height 3cm.

so if somone could help i would be very very grateful!!

thanks