Bye i just want alone time for right now but before i go what is 19 x 6.23

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

Hich polynomial correctly combines the like terms and expresses the given polynomial in standard form? 8mn5 – 2m6 + 5m2n4 – m3n3 + n6 – 4m6 + 9m2n4 – mn5 – 4m3n3

Which is the standard form for this number? (2 x 10) + (5 x 1) + (8 x 1 10,000 )