A reference sheet given with an exam indicated the following formula for the surface area of a cone.
Niles had never seen this formula before, but he knew there must be an error in the formula. How could he tell there was an error?
A.
Using the given formula, the calculated surface area would be in linear units instead of square units.
B.
Using the given formula, the calculated surface area would be in cubic units instead of square units.
C.
Using the given formula, the calculated surface area would be in cubic units instead of linear units.
D.
Using the given formula, the calculated surface area would be in square units instead of cubic units.