Answer:
2400 square units (B)
Step-by-step explanation:
Find attached the complete question.
We would apply the formula for finding the surface area of a cube
Surface area of cube = 6a²
Where a = side length of the cube
From the complete question, side length of the cube (a) = 20units
Surface area of the cube = 6 (20)²
= 6×20×20 = 2400 units²
Surface area of the cube = 2400 square units (B)
