Answer:
16
Step-by-step explanation:
First, let's look at the sides that are given to us. We have 20 and 5.
How much bigger is 20 times 5?
20 ÷ 5 = 4
So, we know that the second triangle got smaller by 4 times. And the first triangle is bigger by 4 times.
Since we know its four times bigger:
4 × 4 = 16
x = 16
Therefore, 16 would be the right answer.
<em>-kiniwih426</em>