Respuesta :

your answer will be A. 3
Your answer will be A. 3

Explanation: 
The prism to the right is 3x larger than the prism to the left. So every side/length/width is gonna be multiplied by 3.

3*3 = 9
10*3 = 30
1*3 = 3, so your answer will be 3.

Hope that helps!