Question

What is the curved surface area of cone of radius 3 cm and height 4 cm?

14πcm²

15πcm²

16πcm²

17πcm²​

Answer 1

Answer:

15πcm²

Step-by-step explanation:

curved surface area of cone is πrl

height = 4cm

radius = 3cm

slant height= 5 [4²+3²=slant height ²] [slant height = √4²+3² = 5]

curved surface area = πrl = π3×5 = 15πcm²