Question

Michael's little brother plays with building blocks that are in the shape of a cube. Each cube has an edge length of 15 millimeters. What is the surface area of this cube? 15 mm² 90 mm² 1350 mm² 3375 mm²

Answer 1

1350

Explanation:

Answer 2

1350 mm²

Explanation:

The area of each square face is the square of the edge length:

... face area = (15 mm)² = 225 mm²

There are 6 square faces on a cube, to the total surface area is 6 times that of one face:

... cube area = 6 × face area = 6×225 mm² = 1350 mm²