Answer:
Hope the below answer is easy to understand 
Step-by-step explanation:
1)  Given the four angles of a quadrilateral are in the ratio 1:2:3:4
Then Let the angles are x,2x,3x and 4x
We know that total of  four angles of a quadrilateral =360 ° 
∴x+2x+3x+4x=360 °
⇒10x=360 °
⇒x=36  °
hence the measures of  angles are 36  ° ,72  ° ,108 °  ,144  °
2) Measure of interior angle of a polygon= 180°.
Sides of the polygon = 7 sides
Therefore,
Interior angle of the polygon having 7 sides = 180/7 = 25 5⁄7°
 
 
        
             
        
        
        
L  = 14 - 6 = 8
w = 15 - 4 = 11
P of shaded = 2(8+9) = 2 (19) = 38
answer
last one 38ft
        
                    
             
        
        
        
<h2>
Explanation:</h2>
Here we have the following expression:

So we need to extend this. Remember that the difference of squares tells us:

So here:

Thus:

 
        
        
        
Answer:
I have fallen and i can't get up
Step-by-step explanation: