28whittakero
28whittakero 28whittakero
  • 23-03-2022
  • Mathematics
contestada

18.84 cm

37.68 cm

28.26 cm

113.04 cm

1884 cm 3768 cm 2826 cm 11304 cm class=

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 23-03-2022

Answer:

  (a)  18.84 cm

Step-by-step explanation:

The circumference of a circle is given by the formula ...

  C = 2πr . . . . . for radius r

A circle of radius 3 cm will have a circumference of ...

  C = 2(3.14)(3 cm) = 18.84 cm

_____

Additional comment

The area is ...

  A = πr² = 3.14(3 cm)² = 28.26 cm²

The units of area are not cm, but are cm². This question asks for circumference. The shading may be misleading.

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