Answer:

Step-by-step explanation:
The formula to find the area and circumference of a circle is:

<em>*</em><em>no</em><em>te that pi is 3.14*</em><em> </em>Therefore the area is:

Therefore the circumference is:

Answer:
12+133
Step-by-step explanation:
Separate this expression into two parts, (6x2) + (-19x-7)
Solve what is in the parenthesis (12) + (133)= 12+133
The simplified expression would also be 145
Answer:
B, 10.5
Step-by-step explanation:
It's actually 10.54, but since you want be to round it, it's 10.5
I think it the answer is A.) 440.32
50,150 / 1,000 = 50.15
50.15 x 8.78 = 440.317 or 440.32