Since it says what the area of the circle is, you need to work the problem backwards from finding the area. So it would be 100 ÷ 3.14 = 31.84 that is the radius. Next you need to find the diameter, so 31.84 × 2 = 63.68. Now you multiply 63.68 × 3.14 = 199.95, round that to 200, divide 200 ÷ 2 = 100 ÷ 2 = 50 miles
Answer= 50 miles
 
        
             
        
        
        
Answer:
20 units
Step-by-step explanation:
The 3 part of the ratio  refers to 15 units
Divide 15 by 3 to find the value of one part of the ratio
15 ÷ 3 = 5 ← value of 1 part of the ratio, thus
4 parts = 4 × 5 = 20 units ← perimeter of larger figure
 
        
                    
             
        
        
        
The GCF is 2 
Merry Christmas
        
             
        
        
        
Becca: in 1 hour; 
(3(3/4) miles in 1/2 hour)2 
=7.5 miles in 1 hour 
Alice: in 1 hour; 
(5(1/4) miles in 3/4 hours)
She travels 5(1/4)/3 = 1.75 miles in 1/4 hours. 
Travels 1.75x4 = 7 miles in 1 hour 
As seen, Becca runs faster, 0.5 miles per hour faster. 
Hope I helped :)