Surface area is measured in which units?

Surface area is measured in which units?

• A. square units (m^2 or ft^2)
• B. cubic units
• C. linear units
• D. perimeter units

Answer: (A)

Surface area quantifies how much two-dimensional surface makes up the sides of a 3D object, so it uses square units. Area comes from multiplying two lengths, hence units like square meters or square feet (m^2, ft^2). Using cubic units would measure volume, not surface area, and linear or perimeter units describe a length—not an area. So square units are the appropriate measurement for surface area.

Surface area quantifies how much two-dimensional surface makes up the sides of a 3D object, so it uses square units. Area comes from multiplying two lengths, hence units like square meters or square feet (m^2, ft^2). Using cubic units would measure volume, not surface area, and linear or perimeter units describe a length—not an area. So square units are the appropriate measurement for surface area.