Answer:
(
Step-by-step explanation:
Surface area of cone is given as:
Surface Area (S.A) = πr(r + l)
Where,


Take π as 3.14
Plug the given values into the formula to find the surface area.


(rounded to the nearest tenth)
1.40 x 21 passes = 29.40 for passes.
38.40 - 29.40 = 9.00
He spent $9.00 on the card