Answer:
8
Step-by-step explanation:
 
        
             
        
        
        
16/80 = 0.2 = 20% have birthdays in the summer
        
             
        
        
        
So for each day, Tessa ran 2.25 miles. So, multiply 2.25 miles by the number of days, which is 14, to get the total number of miles ran.
2.25 x 14 = 31.5 miles
        
             
        
        
        
Answer:
210 yd²
Step-by-step explanation:
If we rotate the shape we get a right angle triangle with a hypotenuse of 29 yd : 
The area of a right angle triangle is given by the formula : 
A =  
 
Substituting the 2 values given in diagram gives us : 
A =  = 420÷2 = 210
 = 420÷2 = 210 
Our units will be yd² as we are dealing with area