Question

Find the surface area

Answer 1

Surface area is the sum of the areas of all faces (or surfaces) on a 3D shape. A cuboid has 6 rectangular faces. To find the surface area of a cuboid, add the areas of all 6 faces. We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area.

Answer 2

Answer:

864 sq. m

Step-by-step explanation:

To find the surface area of the whole cube, you first have to figure out the area of one side.

To find the area of one side, use the equation: l x w.

12 x 12 = 144

This is the surface area of 1 side.

Since this is a cube, the length and width of all the sides are the same, so simply multiply the area of one side by 6 (the number of sides) to get the total surface area.

144 x 6 = 864

So the surface area is 864 sq. m!