Yes it’s 15, Thats cool man
        
             
        
        
        
54/1,000
just do Length x Width x Height 
        
             
        
        
        
Answer:
The area of a trench is 5.5 m² .
Step-by-step explanation:
Formula
Area of a rectangle = Length × Breadth
As given
Tanya has a garden with a trench around it.

i.e

Put in the above formula

                              = 5 m²
As given
 
i.e
 


                                                   = 10.5 m²
Area of the trench = Area of garden with trench - Area of garden
Put the value in the above
Area of the trench = 10.5 m² - 5 m²
                                = 5.5 m ²
Therefore the area of a trench is 5.5 m² .
 
        
                    
             
        
        
        
The unit price is $6.25 because $43.75 divided by 7 is $6.25