Respuesta :

Kinga9
Since lateral surface of an object is the area of all the sides of the object, except the area of its base and top.

It is:

7 * 3 = 21

21 * 2 = 42

12 * 3 = 36

36 * 2 = 42

42 + 42 = 84 in2

and there goes your answer.

A: 84 in2.