What does 21 go into?

What is 75 divided by 48? Is 3.40764076407640764076 an rational number or irrational? 19 boy go out with a 14 girl? How many centimeters are in a meter and a kilometer? What does 10-3 means? How do you tell if a triangle is a right angled triangle? What is the nearest whole number to 585.487? If an object is created with focus on the geometric form in realistic manner it is called? How many lines of symmetry has H got? What shape has 1 set of parallel sides 2 sets of perpendicular sides? What are the diameter and radius of a circle with a circumference of 32π ft? What number is between 1.5 and 1.7? A rectangle a rhombus? What is 1 quarter plus 1 sixteenth? What is the name for the answers to a division problem? Why is hexadecimal is important? Are 2 lines with a transversal always never or sometimes coplanar? What is length of diagonal line in a rectangle 48 feet by 36 feet? What is 180 billion times 0.25? What is the importance of sampling theorem?