What term is used for the measure of the space inside a two-dimensional shape?

What term is used for the measure of the space inside a two-dimensional shape?

• A. Area
• B. Volume
• C. Perimeter
• D. Surface

Answer: (A)

Area is the measure of the space inside a two-dimensional shape. It tells you how much flat space is enclosed by the boundary and is measured in square units. For common shapes you can use simple formulas: a rectangle has area equal to length times width, a triangle has area one-half of base times height, and a circle has area π times radius squared. You can also think of area as how many unit squares fit inside the shape. Volume would be the amount of space inside a three-dimensional object, measured in cubic units. Perimeter is the distance around the edge of the shape, not the space inside. Surface (or surface area) refers to the outer skin of a 3D object, the total area of all its faces, not the two-dimensional interior space.

Area is the measure of the space inside a two-dimensional shape. It tells you how much flat space is enclosed by the boundary and is measured in square units. For common shapes you can use simple formulas: a rectangle has area equal to length times width, a triangle has area one-half of base times height, and a circle has area π times radius squared. You can also think of area as how many unit squares fit inside the shape.

Volume would be the amount of space inside a three-dimensional object, measured in cubic units. Perimeter is the distance around the edge of the shape, not the space inside. Surface (or surface area) refers to the outer skin of a 3D object, the total area of all its faces, not the two-dimensional interior space.