Question

Circle D is below. ⌢ What is the arc measure of BC in degrees

Answer 1

Answer:

$BC = 84$

Step-by-step explanation:

Given

See attachment

Required

Find BC

The sum of $angles\ at\ a\ point$ is 360.

So:

$7n + 12 + 13n - 16 + 6n = 360$

Collect like terms

$7n + 13n + 6n = 360 + 16 - 12$

$26n = 364$

Solve for n

$n = 364/26$

$n = 14$

From the circle:

$BC = 6n$

Substitute 14 for n

$BC = 6*14$

$BC = 84$