<span>C side EF=18 cm; side GH = 30 ; height = 6 cm </span>
In order to change from 35 to 62, we have to add 27. So, the question becomes: which percentage of 35 is 27?
To answer this question, we set this simple equation

And solving for x we have

So, if you change from 35 to 62, you have an increase of about 77%
It's a right triangle as it has the 90 degree corner and 3 different lengths
$530.40/4= $132.60
$132.60 x 3=$397.80
Or
$530.40 x .75= $397.80