Answer:
405 cubed centimetres
Explanation:
(Volume of Rectangular prism: length x width x height)
Volume of the large block: 9 x 5 x 7 = 315 cubed centimetres
Volume of a small block: 6 x 5 x 3= 90 cubed centimetres
Total volume= Sum of the two
315+ 90= 405 cubed centimetres