Answer:
x = 150
Step-by-step explanation:
(n-2)180 (n = the amount of sides)
(12 - 2)180
(10)180
1800
1800/12 = 150
4, 10, 4, 10. 10*4 gives area of 40. 10+10+4+4 gives 48 as shown in question
I'm assuming the given log equation is 
If so, then the exponential form is 
This is because the general form
transforms into 
For both equations, the 'b' is the base.