Answer:360/90 = 4
Total area = 4 times that of the sector.
Step-by-step explanation:
A 90 deg sector has 1/4 the area of the circle.
Total circle area = 4*9pi = 36pi
Answer:

Step-by-step explanation:

Answer:
4.12
Step-by-step explanation:
going from cm to m, divide length value by 100
45+367=412
412/100=4.12
Answer:
this is not even math
Step-by-step explanation: