Answer:
The expression for the perimeter of the rectangle is: 
Step-by-step explanation:
Perimeter of a rectangle:
A rectangle has length l and width w. It's perimeter is given by:

In this question:

So

The expression for the perimeter of the rectangle is: 
 
        
             
        
        
        
Pretty sure your answer is a) angles
        
                    
             
        
        
        
Step-by-step explanation:
1. k = 76°
2. r = 25cm
3. as the drawing attached
 one pair of parallel lines : AB and DC
 one pair of equal angles : <em>L</em><em> </em>A and <em>L</em><em> </em>D
4. (7²× 3`¹)⁴×7^5 / (3² × 7^(-6))³
 = (7^8 × 3`⁴)×7^5/ (3² × 7^(-6))³
 = (7^13 × 3`⁴)/ (3^6 × 7^(-18))
 = (7^(31) × 3^(-10))
 = 7^31 /  3^10
 
        
             
        
        
        
Diane has 380 coins (rounded to the nearest 10)