what is the volume of the composite figure?

20cm
5cm
15cm
5cm
5cm

The volume of the composite figure can be calculated by first finding the volumes of each individual shape and then adding them together.

For the rectangular prism with dimensions 20cm x 5cm x 15cm, the volume is:
V = l x w x h
V = 20cm x 5cm x 15cm
V = 1500 cm³

For the cube with dimensions 5cm x 5cm x 5cm, the volume is:
V = s³
V = 5cm x 5cm x 5cm
V = 125 cm³

Adding the volumes of both shapes together:
1500 cm³ + 125 cm³ = 1625 cm³

Therefore, the volume of the composite figure is 1625 cm³.