Rational number between 3 and 5 = 3.5
irrational number between 3 and 5 = (pi) ....3.14159265359.......
        
             
        
        
        
1/2 dozen pencils in 1/3 box
what about 1 dozen
we cross miltiply this to get
1/3*2=2/3
doing the same for all the questions we get
1/4*5/4=5/20
3/4*5/3=15/12
3/10*12/7=18/35
        
             
        
        
        
Answer: 308cm
Step-by-step explanation: The formula to find the curved surface area of a cylinder is 2πr × h. The formula for curcufrence is 2πr. 
So, 
2πr (circumfrence)= 44cm. 
Height= 7cm. 
2πr × h = 44 x 7 = Curved surface area. 
Curved surface area= 308cm