Hey there!!
In order to solve this, we will need to take a closer look at the question.
Let's rewrite this question as :
4 ( t )² / t- this makes it clear. We will just have the square the value of t not the 4.
Given :
t = 10
... 4 ( 10 )² / 10
... 4 ( 100 ) / 10
... 400 / 10
... 40
Hope my answer helps!!