first make two triangles using M , so there iwll be 90-45-45, and 30-60-90 then use the side rules of those special triangles
 
        
             
        
        
        
p=36
because 15 is 3 times 5 so just multiply the perimeter
 
        
             
        
        
        
Your answer is gonna be 578
        
             
        
        
        
Answer:

Step-by-step explanation:
Given: Chandler walk 1/16 km every 10 minutes.
First, lets find how many 10 minutes in one hours or convert minutes in hours.
∴ Time= 
Now, finding kilometres travelled in 1 hour.
Distance travelled= 
Distance travelled = 
Converting  into decimal will have 0.375 km.
 into decimal will have 0.375 km.
∴  will chandler walk in 1 hour.
 will chandler walk in 1 hour.
 
        
                    
             
        
        
        
B is the answer to ur question