Newbie: so am trying to figure out how to prompt the user for a # that represents a radius of some circle and place that # into a variable and use to calculate the area of the circle with the given radius. need to use a user=defined constant for the value TT thats used in calculation of the area and a bit later the volume.

prompt user for hgt value, using same radius, calculate volume of a cone having the radius entered above.

generate a msgbox to display

i.e. a cirlce with radius 27 has area 2,290.2191

a cone with radius 27 and height 13 has volume 9,924.2828

suggestions please....