What is the value of x , given that the two prisms are similar ?

Answer:
x = 40 units.
Step-by-step explanation:
Corresponding sides of the 2 prisms are in the same ratio , so:
x / 20 = 10 / 5
x/ 20 = 2
x = 2 * 20
x = 40 units.
ANSWER
The correct choice is A.
EXPLANATION
If the the two prisms are similar, then their corresponding sides are in the same proportion;
This implies that
[tex] \frac{x}{20} = \frac{6}{3} [/tex]
We simplify to get;
[tex] \frac{x}{20}=2[/tex]
We now multiply both sides by 20 yo obtain;
[tex] \frac{x}{20} \times 20 = 2 \times 20[/tex]
We simplify and multiply out to get:
[tex]x = 40[/tex]
Therefore the value of x is 40 units