Answer:
a = 4/27 - b/54
Step-by-step explanation:
27a+1/2b=4
Subtract 1/2 b from each side
27a+1/2b - 1/2 b=4-1/2 b
27a = 4 - 1/2 b
Divide each side by 27
27a/27 = 4/27 - 1/2 b/27
a = 4/27 - b/54
Answer: 
Step-by-step explanation:
Given
The area of the base is 
height of the triangular prism is 
The volume of a triangular prism is 
The volume of given Prism is

The volume of the triangular prism is 