What does the A stand for in kids size 4a?

In the diagram what is the measure of angle 1? What is 40 percent off 50.00? What is an example of a trinomials? What is the solution for x in this problem x-5-2 equals 10? What is 100 to the 0 power? What is the probability of rolling a 12 in a single roll of two dice? What is 708569 rounded to the nearest thousand? What 8 plus 8 plus 8 equals? How is mode of each data set? What are values that divide the data set into four equal parts? How many Roy's are in the world? What is 60.2 kg in stones and pounds? Is A of a circle is a region bounded by an arc of a circle and radii to the end points of the arc? What is the mixed number for 75 out 7? Four times a certain numberis 6 more than 10 what is the number? Can 1.2 x 10 to the 3rd power be a gas? How many 50mm to make 100 feet? What does roget's theasurus mean? Examples of nouns with opposite genders? How many ten thousands are in 2000 tens?