Answer:
78.5
Step-by-step explanation:
area of a circle is 
3.14(
)=78.5
b is the correct answer
Step-by-step explanation:
see the step in the picture
Answer:
Step-by-step explanation:
2×radius with pi, 28*pi=28 pi or 87.92
Choice B) Commutative Property is the answer
The commutative property of addition says that we can add two numbers in any order. For example: 2+3 = 5 and 3+2 = 5.
In general, the rule can be written as x+y = y+x. The x and y are simply placeholders for numbers. You can think of them as empty boxes to write a number inside. In this case, we have 7.2 for one of the boxes and -5.5 as the other value in the other box.