The height of a cone is 16 cm and its base radius is 12 cm. Find the curved surface area and the total surface area of the cone (Use π=3.14).
R.E.F image
OA=16cm,AB=l
l=√162+122=√256+144
l=20cm
curved surface Area,
C.S.A=πrl=3.14×12×20=753.6cm2
Total surface Area,
T.S.A=πr(r+l)=3.14×12[12+20]=1205.76cm2