Question

PLEASE HELP ME FIND THE LENGTH

Answer 1

Length of arc AB is,

= 2πr (angle between AB) /360

=2×3.14×90/360

=1.57 cm

Answer 2

For this case we have that by definition, the arc length of a circle is given by:

`AL = \frac {x * 2 \pi * r} {360}`

Where:

x: Represents the angle between AB. According to the figure we have that x = 90 degrees.

`r = 7.9 \ cm`

So:

`AL = \frac {90 * 2 \pi * 7.9} {360}\\AL = \frac {90 * 2 * 3.14 * 7.9} {360}\\AL = \frac {4465,08} {360}\\AL = 12.403`

Answer:

`12.4\ cm`