Final answer:
To determine the surface area of a cube with an edge length of 4.5, use the formula SA = 6 × (s)², resulting in a total surface area of 121.5 square units.
Step-by-step explanation:
To calculate the surface area of a cube with an edge length of 4.5, we can use the formula SA = 6 × (s)², where 's' represents the side length of the cube. Inserting the given edge length into the formula, we have SA = 6 × (4.5)².
First, calculate the area of one face: (4.5)² = 20.25 square units. Next, since a cube has 6 faces, multiply the area of one face by 6 to get the total surface area: 6 × 20.25 = 121.5 square units. Therefore, the total surface area of the cube is 121.5 square units.