1. a 30 ft copper wire is cut into 3 equal pieces. each piece of copper is re-formed to make 3 complete circles.
(a) what is the circumference of each circle?
(b) what is the radius of each circle? round your answer to the nearest tenth. use π 3.14.
(c) what is the area of each circle? round your answer to the nearest tenth. use π = 3.14.

a).  If you cut 30-ft of wire into 3 equal pieces, then each piece
pretty much has to be 10-ft long, no matter what you do to it.
Whatever shape you make it, the perimeter of the shape is 10-ft.
If you form it into a perfect circle, then the circumference of the
circle is 10-ft.

b).  Remember that in ANY circle

                                 Circumference = (π) times (diameter)

                                              10-ft     = (3.14) x (diameter)

Divide each side by 3.14:    10-ft/3.14 = Diameter

Radius = 1/2 the diameter
Diameter = 2 x radius            10-ft/3.14 = 2 x radius

Divide each side by 2:            5-ft / 3.14  =  radius

                                                       1.59-ft  =  radius .

c).         Area of any circle = (π) times (radius)²

                                  Area  =  (3.14) x (1.59-ft)²

                                            =  (3.14) x (2.53 ft²)

                                            =   7.94 ft²   (rounded)  

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