The radius and the slant height of the right circular cone are given below. \((\)Use \(\pi = 3.143)\)
 
Radius
Slant height
Curved surface area
Total surface area
4.2 \(m\)
8.4 \(m\)
 \(m^2\)
 \(m^2\)
 
[Note: Round off your answer to two decimal places]