Answer:
1) D. 14 cm
2) C. 43.96 cm
Explanation:
First answer explanation:
Segment A to B would be 14 cm because the radius (middle to the bounding surface) is 7 cm so you just have to double that since you want to go from one side point to the other crossing through the middle.
The first answer is D.
Second answer explanation:
The circumference is basically the perimeter of a circle. To find the circumference you have to do 2pr (2*pi*radius). We know that the radius is 7 cm and pi is 3.14. Now we can plug the numbers in, 2*3.14*7 is the equation we have to solve. First we'll do 2*7 and get 14. Next we do the final step 3.14*14. We know that it has to be either A or C at this point because the other numbers are too low and if you think about it the answer has to be a decimal so it has to be C. If you want to do the multiplication that is fine but it is unnecessary.