IXL | Surface area of cubes and rectangular prisms

A cube is shown below.

Which diagram is a net for the cube?

What is the surface area of the cube?

square centimeters

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Learn with an example

A cube is shown below.

Which diagram is a net for the cube?

What is the surface area of the cube?

square inches

A net shows all the faces of a three-dimensional figure.

A cube has six square faces. Its surface area is the sum of the areas of all six faces.

Six faces make up the cube, each with a side length equal to 35 inches.

This is a net for the cube. It shows all of the faces and, when folded up, will form the cube.

To find the surface area of the cube, add up the areas of all six faces.

There are six square faces, each with a side length of 35 inches. Find the area of one of them.

1,225

square inches

Finally, find the sum of the areas of all six square faces. Since all six square faces have the same area, multiply 1,225 square inches by 6.

(

1,225

)

7,350

The surface area of the cube is 7,350 square

inches.

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