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elena-s [515]
3 years ago
15

What is the area of the smaller circle if the radius is 2 feet?

Mathematics
2 answers:
Ber [7]3 years ago
5 0

Answer:

6.28 feet

Step-by-step explanation:

you multiply pi which is 3. 14 and take out the decimal and multiply 314 times 2 and move the decimal over 2 spaces and label in inches

HACTEHA [7]3 years ago
3 0

Answer:

About 12.57, using the google formula calculator for circumference.

Step-by-step explanation:

*We're assuming the smaller circle has the radius of 2 feet, and not a larger circle that's not depicted.

Circumference=2(pi)r

  1. 2(pi)(2)   *We plug in 2 into the radius*
  2. Simplify
  3. C≈12.57
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jeka57 [31]

The answer is:   "  y − 1  =  - 3(x + 2) " .
__________________________________________________________

Explanations: 
__________________________________________________________

<u>Note</u>:  The "point-slope form" of the equation of a line is:

                  →     " y − y₁ = m(x −x₁) " . 

We are given the slope,  m" , is:  " - 3 " ;  

We are given a point on the line [on the graph that is represented by this equation];  with the coordinates:  " (-2 , 1) " ;  

                          →   which is in the format: " (x₁ , y₁) " ;
                                      
                          →   As such:  " x₁  = -2 "  ;   " y₁  =  1 " ; 
_____________________________________________________
As aforementioned, the equation of a line in "point-slope form" ;  is:  
_________________________________________________________
                          →    " y − y₁ = m(x − x₁) " ;  

in which:
 
 →  "(x₁ , y₁) " represents the coordinates of a given point on the [line of the graph represented by the equation] ;  AND: 

 →   " m "  =   the slope of the line [represented by the equation] " ; 

We proceed by substituting our known values for "m" ;  "y₁" ; and "x₁" :
 
 →       " y − 1  =  - 3(x − (-2) ) "  ;   
_______________________________________________________                                                        
 →   Rewrite as:
_______________________________________________________
 →      "  y − 1  =  - 3(x + 2) "  ;  

 →    which is our answer;  since it is written in "point-slope form" .
_______________________________________________________
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Step-by-step explanation:

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