Respuesta :

wegnerkolmp2741o

Answer:

21 cm

Step-by-step explanation:

The circumference is 84

90degrees  out of 360 degrees in a circle is 90/360 = 1/4

The arc is 1/4 of the circle, so it is 1/4 of the circumference

1/4 * 84  = 21 cm

Answer:

A

Step-by-step explanation:

The length of the minor arc XY can be calculated using

XY = circumference × fraction of circle

    = 84 × [tex]\frac{90}{360}[/tex] = 84 × [tex]\frac{1}{4}[/tex] = 21 cm → A

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