Understand the problem
Gather your resources
Come to an answering
Check your answer and present the solution
Answer:
D is the right one
Step-by-step explanation:
π radian = 180 degree
-> 135 degree =
π radian
-> 135 degree = 0.75 * π radians = 3π/4 radian
10+11+3
21+3
24
24/6
The mean is 4