Answer:
65 cm
Step-by-step explanation:
A= 1/2 bh
A= 1/2 (13 cm) (4 cm)
A= 65 cm
 
        
                    
             
        
        
        
Answer:
%  change in stopping distance = 7.34 %
Step-by-step explanation:
The stooping distance is given by

We will approximate this distance  using the relation 

dx = 26 - 25 = 1 
T' =  2.5 + x
Therefore 

This is the stopping distance at x = 25
Put x = 25 in above equation
2.5 × (25) + 0.5×  + 2.5 + 25 = 402.5 ft
 + 2.5 + 25 = 402.5 ft
Stopping distance at x = 25 
T(25) = 2.5 × (25) + 0.5 × 
T(25) = 375 ft
Therefore approximate change in stopping distance = 402.5 - 375 = 27.5 ft
%  change in stopping distance =  × 100
 × 100
%  change in stopping distance = 7.34 %
 
        
             
        
        
        
Answer:
R = 10.
Step-by-step explanation:
 
        
                    
             
        
        
        
We need to find LCM of the denominators
It is found to be 24
We get the fractions (4+9)/24= 13/24