keymonni56 keymonni56
  • 01-12-2020
  • Mathematics
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Find the length of arc ab. Need help!!!

Find the length of arc ab Need help class=

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NgShiYin
NgShiYin NgShiYin
  • 01-12-2020

Answer:

12.4cm (rounded to nearest tenth)

Step-by-step explanation:

To find the length of an arc, you have to find the circumference of the full circle itself multiplied by the angle of the arc over 360°. The circumference of a circle is pi × r × 2.

Length of arc = [tex]\frac{90}{360}[/tex] × 3.14 × 7.9 × 2

                      = 12.403

                      ≈ 12.4cm (rounded to nearest tenth)

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