You can use gestures to emphasize key points. Volume and tone both include verbal so it isn't those, and then pace is how fast you move which usually doesn't affect key points.
Answer:
C. To inform
Explanation:
To inform because they aren't trying to sell anything they are telling what there solution is to that problem.
D is the most appropriate answer, so i would pick that one.
Answer:
Twice the radius
As with circles, the diameter of a sphere is twice the radius. C = πD or 2πr. As with circles, the circumference of a sphere is equal to π times the diameter. Since the diameter is twice the radius, we can also say that the circumference is twice the radius times π. V = (4/3)πr3
Explanation:
