. Find the area of the shaded sector.
123
- 19 ft -
A. 96.87 ft
B. 746.63 ft-
C. 186.66 ft?
D. 387.49 ft?

  D. 387.49 ft²

Step-by-step explanation:

A shaded sector that subtends an arc of 123° in a circle of radius 19 ft will have an area of ...

  A = (1/2)r²θ

where θ is the central angle in radians.

We know that π radians is 180°, so we can compute the area as ...

  A = (1/2)(19 ft²)(123°·π/180°) = (14801/120)π ft²

  A ≈ 387.49 ft²

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1