Use the net to find the lateral area of the prism.

mm^2

Lateral area is area of sides, not including base and top

if we look at it, that means just find the area of the 2 triangles and the small rectangle at the end becaseu the other 2 rectangles are base and top

areatriangle=1/2bh
arearectangle=bh

arearectangle=5*15=75
area triangle (there are 2 of them )=2*1/2*5*12=60
total is 75+60=135 mm^2