Martha estimated there were 88 marbles in a jar for a contest. The actual number of marbles in the jar was 110. What was the
percent error of Martha's estimation?

The percent error was 20%, she accerted by 80%

this was already solved by me with a different person. if you look it up in the search bar at the top of the page, you will get the answer.

step-by-step explanation:

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !