Answer:
Volume of the wooden block is 1512 cm³ .
Explanation:
Formula 
Volume of right rectangular prism = Length × Breadth × Height 
As given
Two blocks of wood are shaped as right rectangular prisms. 
The smaller block has a length of 9 cm, a width of 3 cm, and a height of 7 cm. 
As given
The dimensions of the larger block are double the dimensions of the smaller block. 
Length of the larger block = 2 × Length of the smaller block 
 = 2 × 9 
 = 18 cm 
Breadth of the larger block = 2 × Breadth of the smaller block 
 = 2 × 3 
 = 6 cm 
Height of the larger block = 2 × Height of the smaller block 
 = 2 × 7
 = 14 cm 
Put in the formula 
Volume of larger wooden block = 18 × 6 × 14 
 = 1512 cm³ 
Therefore the volume of the wooden block is 1512 cm³ .