*WILL GIVE BRAINLIEST* The sum of the areas of all the faces of a 3D object is called:

A: area
B: surface area
C: volume
D: perimeter

b

Step-by-step explanation:

Surface area

Step-by-step explanation:

Area is the space taken up by one surface plane

Volume is the amount of space taken up by the entire object

Perimeter is the length of all the edges of the shape combined

x is variable or an unknown value to find

example:

2x = 5 which means x = 3