By definition, the prism volume is given by:

Where,
Ab: base area
L: long
Substituting values we have:
Answer: The volume of the triangular prism is:
Through trial and error:
(7x-6)(3x-2)
Usually it works best to test out a number of possibilities :)
Answer:
The correct option is 3. The length of XC is 30.
Step-by-step explanation:
It is given that triangle ABC and triangle XYC are similar.
According to the properties of similar triangles, then corresponding sides of similar triangles are congruent.
In triangle ABC and triangle XYC,

Let the length of XC be x.
From the below figure it is notices that






Therefore correct option is 3. The length of XC is 30.