The surface area of a 3D object is 109 cm².
The surface area of a 3D object is the sum of the areas of all its faces. To find the surface area of the shape in the image, we need to find the areas of each of the six faces and add them up.
From the image, we can see that the dimensions of the shape are:
Length = 6 cm
Width = 5 cm
Height = 4 cm
Here are the areas of each of the faces:
Face 1 (6 cm x 4 cm) = 24 cm²
Face 2 (5 cm x 4 cm) = 20 cm²
Face 3 (6 cm x 3 cm) = 18 cm²
Face 4 (5 cm x 3 cm) = 15 cm²
Face 5 (6 cm x 2 cm) = 12 cm²
Face 6 (5 cm x 2 cm) = 10 cm²
Therefore, the total surface area of the shape is:
24 cm² + 20 cm² + 18 cm² + 15 cm² + 12 cm² + 10 cm² = 109 cm²