Answer:
40.2
Step-by-step explanation:
Diameter = 16, Radius = 16/2 = 8
Central angle = 2π/5 radians = 72°
Sector area,
8²π×(72/360)
= 64π/5
= 40.2 (rounded to the nearest tenth)
Answered by GAUTHMATH
Working attached below. Hope this helps! Any questions let me know :)
Answer: 
Since 8 is being multiplied to the 3 power we multiply it 3 times.
is written like 

3 hours is 180 minutes.
She rested for 20 additional minutes, thus it will take her 200 minutes.