Circumference of circle=
A) 12 pie units
B) 36 pie units
C) 24 pie units

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

Two cities a and b are 1400km apart and lie on the same n-s line. the latitude of city a is 23 degrees. what is the latitude of city b. the radius of the earth is approximately 6400km.

At the movie theatre, child admission is $5.20 and adult admission is $9.70. on sunday three time as many adult tickets as child tickets were sold, for a total sales of $788.90. how many child tickets were sold that day?