I'm 11, except my profile says I'm 15.
I tried deleting my account and signing up again, but I always get an error message that says something along the lines of "You can't register at this time."
Is there a way to change my age?
What should I do?

What provides an array of buttons for quick access to commonly used commands and tools

The volume v and paper surface area a of a conical paper cup are given by where r is the radius of the base of the cone and h is the height of the cone. a. by eliminating h, obtain the expression for a as a function of r and v. b. create a user-de ned function that accepts r as the only argument and computes a for a given value of v. declare v to be global within the function. c. for v ! 10 in.3 , use the function with the fminbnd function to compute the value of r that minimizes the area a. what is the corresponding value of the height h? investigate the sensitivity of the solution by plotting v versus r. how much can r vary about its optimal value before the area increases 10 percent above its minimum value?

What are the 12 colors of the spectrum called?