if the diameter of a circle is 15, its radius is half that or 7.5.
Your teacher just wants you to replace pi any equations with 22/7 because it is close to pi
Counting numbers is like the numbers 1,2,3,4,5 and so on they were numbers you were probably taught to count to like to count through 1-10 or whatever. Counting numbers mean to count since they do have the word counting in them.
Whole number just means a number with no fraction or intger also 1 - infinity
If <em>z</em> ⁷ = 128<em>i</em>, then there are 7 complex numbers <em>z</em> that satisfy this equation.
(where <em>n</em> = 0, 1, 2, …, 6)