A cube has side length 9 cm. What is its total surface area?
Note
A cube has 6 equal square faces. One face is 9 × 9 = 81 cm², so total surface area is 6 × 81 = 486 cm².
A cube has side length 9 cm. What is its total surface area?
A cube has 6 equal square faces. One face is 9 × 9 = 81 cm², so total surface area is 6 × 81 = 486 cm².