Question

The surface area of a three-dimensional object is:

A. The total length of its edges incorrect answer

B. The area of one of its faces incorrect answer

C. The total area of its outer surface incorrect answer

D. The amount of space inside

Answer 1

c

Explanation:

The total surface area of a 3-dimensional object is the sum of the areas of the faces or surfaces of a 3 dimensional object

for example, the total surface area of a cube is the sum of the area of all the six faces

the total surface area of a cube = 6a²

where a = edge

if a = 6

total surface area

6(6²) = 216