Question

A brick is a _____________ dimensional object.

Answer 1

We define a three-dimensional shape as any shape that has three dimensions. Length, width, and height are the three dimensions.

Brick is a three-dimensional shape because it has a width, a length, and a height.

Shapes that can be measured in $3$ directions are called three-dimensional shapes. These shapes are also called solids.

Length, width, and height (or depth or thickness) are the three measurements of three-dimensional shapes.
Hence, the brick is in the shape of a cuboid and it is a $3D$ object.