Explanation
The sum of the three angles of a triangle has to be equal to 180 degrees.
So...
180-(75+50)
180-125
=55 degrees
X equals 55 degrees
Answer: 136 units squared
Explanation: 5*7=35, 5*7=35, 6*7=42, 1/2 of 4*24=12, 1/2 of 4*24=12
35+35+42+12+12= 136 units squared
3170*.30= 951
The original cost is 3170+951
$4121