What is 2 3/4 × 1 5/6 = in a fraction

How do you use the elimination method for this question? explain, because i really want to understand!

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

The cross-sectional areas of a right triangular prism and a right cylinder are congruent. the right triangular prism has a height of 6 units, and the right cylinder has a height of 6 units. which conclusion can be made from the given information? the volume of the triangular prism is half the volume of the cylinder. the volume of the triangular prism is twice the volume of the cylinder. the volume of the triangular prism is equal to the volume of the cylinder. the volume of the triangular prism is not equal to the volume of the cylinder.