A three-dimensional shape is a solid shape with height or depth. Surface Area of cuboid 2lb bhlh 2a2a2 a2 6a2 Surface Area of cuboid 2 l b b h l h 2 a 2 a 2 a 2 6 a 2 A very good way to be able to visualise surface area is to unfold the 3-dimensional shape and lay it out flat on a surface. Here is a rectangular prism.
Let us learn the interesting concept.
For example the sphere cuboid sphere etc. H is the height of the cylinder r is the radius of the top Surface Area Areas of top and bottom Area of the side. Surface Area of cuboid 2lb bhlh 2a2a2 a2 6a2 Surface Area of cuboid 2 l b b h l h 2 a 2 a 2 a 2 6 a 2 A very good way to be able to visualise surface area is to unfold the 3-dimensional shape and lay it out flat on a surface. Surface Area 2bs b2.