URGENT PLS HELP!!!!!!
The costume department of a theatre company is making cone-shaped hats for a play set in medieval times. Wash that will be covered with satin over its entire lateral surface area inside and out. The slant height of each hat will remain constant at 20 inches but the radius of the base will vary to accommodate different head sizes. Using 3.14 for pi, the lateral area of the hat can be expressed as a function. Use this information for Exercises 9-11.