katelynelizabep1dotz katelynelizabep1dotz
  • 12-06-2018
  • Mathematics
contestada

What is the exact length of AB?
(photo below)

What is the exact length of AB photo below class=

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asiandogzzz asiandogzzz
  • 12-06-2018
I don't know an equation so don't do rate this...but if it were me, I would guess between 6(pi) or 8(pi)
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jdoe0001 jdoe0001
  • 12-06-2018
as you can see, the central angle for the arcAB is 270°, whilst the radius is 4 units long.

[tex]\bf \textit{arc's length}\\\\ s=\cfrac{\theta \pi r}{180}~~ \begin{cases} r=radius\\ \theta =angle~in\\ \qquad degrees\\ ------\\ \theta =270\\ r=4 \end{cases}\implies s=\cfrac{(270)(\pi )(4)}{180}\implies s=6\pi [/tex]
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