It would be A. It is A because 5 is negative, 2.1 is negative, 0.3 and 3.1 are positive. Also 5 is greater than 2.1, so in this case -5 would be before -2.1.
duh-
how do we even figure out the diameter of something only with the height-?
3 and a half tons is what it weighs.
To start with we have to write down what we know. pi=3.14, r=9, arc length is 1. x is the angle we are trying to find. Saying that the radius is 9
There is an equation that states that the arc length is equal to x/360 (the fraction of the circle) multiplied by the circumference or 2 times pi times the radius.

where * means multiply.

Simplify

Take the 28.26 over to the other side of the equation, where it then it divides the 1.

This becomes:

Then the 360 is brought over to the other side and multiplies the 0.035:

And finally simplify the whole equation and we get our answer.
In a store, perhaps. People want it to be easy to shop, so it would be best for say, a top ramen package to be the same net weight as all the other top ramen packages. This makes it 1) easy to label and 2) easy to be confident buying, as it is exactly the same as all the others.