What is the value of z?

z = 30.45 feet

Step-by-step explanation:

The volume (V) of a triangular prism is calculated as

V = area of triangular end (A) × length

Here V = 913.5 and length = 15, thus

A × 15 = 913.5 ( divide both sides by 15 )

A = 60.9 ft²

The area of the triangle = bh ( b is the base and h the height ), thus

× 4 × z = 60.9

2z = 60.9 ( divide both sides by 2 )

z = 30.45

we don't have enough info to solve this

step-by-step explanation: