Question

What is the surface area of the prism?
http://static.k12.com/calms_media/media/243500_244000/243731/1/291249ebebc072bafaff090e8ca65a2db9bac29b/VHS_PA_S2_05_L213_L313_UT_Q10_b.gif


A.
144 in2

B.
140 in2

C.
288 in2

D.
420 in2

Answer 1

so can u break it down for me

Answer 2

@jim_thompson5910

Answer 3

what is the area of this rectangle



this is the bottom face

Answer 4

that would be 144

Answer 5

now the top faces (there are 2 of them)

each look like this



what is the area of that rectangle?

Answer 6

90

Answer 7

so do i add or what

Answer 8

there are 2 of these faces, so 2*90 = 180

Answer 9

now finally the front and back triangular faces

each look like this