Let the number be x
3x + 5 = 20
3x = 20 - 5
x = 15/3
x=5
Answer:
The area of the sector is 
Step-by-step explanation:
we know that
The area of a complete circle (16π units^2) subtends a central angle of 2π radians
so
using proportion
Find out the area of a sector , if the central angle is equal to 8π/5 radians

Answer:
$12.6 after marking it up by 90%
Step-by-step explanation: