To which subsets of the real numbers does the number 2.97 belong?

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

Glenda makes an online purchase for picture frames for $12.95 each and formats of $5.89 each the site says it taxes paid by the customer or 6.5% of the total purchase price shipping charges are based on the

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2