Question

Redius 10cm and slant height 30cm find surface area of cone

Answer 1

given

the radius of cone = 10 cm
slant height of cone = 30 cm

surface area of cone is = ?

surface area of cone = 3.14 ×10×30
surface area of cone = 942

Answer 2

Radius (r) = 10 cm
Slant height (l) = 30 cm
Surface area of cone = πrl
= 22/7 × 10 × 30
= 6600/7
= 942.8 cm²

Hope it helps