To find the surface area of any object, the first step that you must do is find all shapes that are present in the object.
Here we have 2 triangles and 3 rectangles. 
Knowing this, simply find the area of each shape. 
Since the triangles are the same, one is facing up and the other down, they both would be 15.6 cm^2. 
The rectangles would be 54 cm^2. as there are 3 ( 6 x 3 cm) ones. 
Add the values up to have the surface area. 
It’s 85.2 cm^2.
        
                    
             
        
        
        
Answer:
$120.
Step-by-step explanation:
The amount he sells the tool kit for  = 80 + 20% of 80
= 80 + 16
= $96.
Let m be the marked price, then 
m - 0.20m = 96
0.8m = 96
m = $120.
 
        
             
        
        
        
The answer is -1....................
        
                    
             
        
        
        
Answer: 761 yd
split the figure into different pieces to make it easier
(23 x 7) + (40 x 15)
161 + 600
761
hope this helped :)