A state map has a circle-shaped compass. If the radius of the compass is 15 millimeters, what is the approximate area of the compass? (Use 3.14 for .)

Answer:  " 707 mm² "  .
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Note:
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The area, "A" of a circle:

A = [tex] \pi [/tex] * r²  ; 

  in which:  "A = area of the circle" ; 
                   π = 3.14 (approximation we are given in problem; and commonly                                                                                                                     used);
                   r = radius = 15 mm (given) ; 
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Solve for "A" (the area of the circle) :
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       A = [tex] \pi [/tex] * r² ;

→  A = (3.14) * (15 mm)² ; 

→  A = (3.14) * (15)² * (mm²) 

→  A = (3.14) * (15)² * (mm²) ;

→  A = (3.14) * 225 * (mm²) ;

→  A = 706.5* (mm²) ;

→  A = 706.5 mm²) ;  → round to:  " 707 mm² " .
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