Answer:
Option A is correct.
Value of 
Step-by-step explanation:
Given:  and common difference(d) = 3.4
 and common difference(d) = 3.4
A sequence of numbers is arithmetic i.e,  it increases or decreases by a constant amount each term.
The sum of the nth term of a arithmetic sequence is given by;
 , where n is the number of terms, a is the first term and d is the common difference.
, where n is the number of terms, a is the first term and d is the common difference.
We also know the nth tern sequence formula which is given by ;
 ......[2]
                             ......[2]
First find a.
it is given that 
Put n =12 and d=3.4 in equation [2] we have;
 
 
 
 
2.4 = a + 37.4
Simplify:
a = - 35
Now, to calculate 
we use equation [1];
here, n =2 , a =-35 and d=3.4




Simplify:

Therefore, the sum of sequence of 22nd term i.e, 
 
        
                    
             
        
        
        
Divide 16/2 to get 8. Then multiply 3.14 x 8 x 8. That gives you 200.96 m. Hope this helps!
 
        
             
        
        
        
Answer:
What do u mean
Step-by-step explanation:
 
        
             
        
        
        
Answer:
m < ACO = 90 degrees.
Step-by-step explanation:
The line joining the center O of the circle to the point of contact of the tangent is a right angle.
 
        
             
        
        
        
Answer:
156
Step-by-step explanation:
-7(-3)+(-9)(5)(-3)
21+135
156