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1) NEI
2) AAS
3) NEI

in order to prove triangles congruent you need to know three parts are congruent, but you can only use these in certain orders.

SAS-
side angle side
the congruent angles are surrounded by two congruent sides so, the 3 other parts must be equal; a straight line connecting the two end points must be equal and the angles would also be congruent.

ASA-
angle side angle
the congruent sides have congruent angles on both sides so the extending lines will have the same slope and meet to form the remaining parts.

SSS-
side side side
if the sides are the same the angles will also be the same

AAS-
angle angle side
two congruent angles followed by a congruent side

The answer would be b ! explanation: the formula for sa *surface area * is 2×l×w+2×l×h+2×w×h so in this case l=4w=12h=8so you use the formula to solve it and it give you the answer of 352^cm^2

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