ENGLISH MIDDLE SCHOOL

The circumference of a circle is 44cm.Find its radius and its area.

Answers

Answer 1
Answer:
The circumference of a circle is (pi) x (diameter).

Diameter = (circumference) / (pi)

Radius = 1/2 of the diameter = (circumference) / (2 pi)

                                              = (44cm) / (2 pi) = 22cm/pi = 7 cm (rounded)

The area of a circle is (pi) x (radius)²  = 

                                   (pi) x (22cm/pi)² =

                                          (22cm)²/pi  =

                                          (484 cm²)/pi =  154.1 cm² (rounded)


                                                                                 =    

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