Question

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

300 in2

584 in2

40 in2

96 in2

Answer 1

hold on before you help me

Answer 2

okay I tried to do it myself and kept getting the wrong answer

Answer 3

first we treat the middle part as a rectangle and do:

8*(5+12+13) then we add the triangles

Answer 4

area of triangle = (1/2) * 5 * 12

two triangles = 2 * ( 1/2) * 5 * 12

so your answer = 8*(5+12+13) + 2 * ( 1/2) * 5 * 12

Answer 5

okay I did the first step but I did not add the triangles

Answer 6

yeah, if it asks for surface area you must add everything

if it asks for lateral area you can exclude the top/bottom sides

Answer 7

300

Answer 8

good!