Answer:
as below
Step-by-step explanation:
add up the surface area of each side of this object
this object has 5 sides
2 of the sides are equal triangles so we could add those up to make one whole rectangle. and if we do that then there are only 4 sides
the two triangle sides add up to one rectangle side of 4 *3 = 12
the bottom side facing downwards = 3 * 7 = 21
the back side facing away = 4 * 7 = 28
the front side at an angle = 7 * 5 = 35
12 + 21 + 28 + 35 = 96 [tex]cm^{2}[/tex]
