Question

What is a surface area?

Answer 1

Answer:

The surface area is the sum of the area of all faces of the 3D shape.

For Example.

If the length of a cube is 6cm. To work out the surface area you would first have to find the area. You can do this by multiplying 6 by 6, which gives you 36. You would then multiply 36 by 6, which gives you 216. This is because the cube has 6 faces.

1) Find the area of one face.

$6*6=36$

2) Multiply by the number of faces.

$36*6=216cm^{2}$

Answer 2

Answer:

Surface area is the total area of the surface of a three-dimensional object.

Step-by-step explanation:

For example,

Like a cubes surface area is the area of all the faces added together