Answer:
90
Step-by-step explanation:
If we have total around 281 items, and we can divide them into groups of 3.
We can make around 281/3 groups which is about 90
 
        
                    
             
        
        
        
1) c= 3.5cm × 22/7
 c= 77cm/7 = 11cm
2) c= 2×3.14×5cm
 = 6.28× 5cm
 =31.4cm
3) L=180/360 × 22/7 × 3cm
 = 1/2 × 22/7 ×3cm
 =4.71 cm
4) c=12cm ×3.14
 =37.68cm
5) c = 4.5cm × 3.14
 =14.13cm
6) c = 6.7cm × 3.14
 = 21.038cm
 
        
             
        
        
        
Answer:
true
Step-by-step explanation:
If the standard deviation is increased and the sample size and confidence level stay the same, then the margin of error will also be increased
 
        
             
        
        
        
Answer:
Center = (5,-3) and radius = 7
Step-by-step explanation:
(5) If Oskar bisects the diameter of a circle, what is he trying to construct the radius of the circle.
(6) The given equation is :

The general equation of circle is given by :
 ...(1)
 ...(1)
Where
(a,b) are the coordinates of the centre and r is the radius.
The given equation can be written as :
 ..(2)
 ..(2)
Comparing equation (1) and (2) we get :
a = 5, b = -3 and r = 7
So,
Center = (5,-3) and radius = 7
Hence, this is the required solution.