Question

the base of a cone is 3 cm and the diameter is its base is 8 cm then its curved surface area is​

Answer 1

Answer:

CSA of cone = 62.85 cm^2

Step-by-step explanation:

height (h) =3cm

radius (r) =d/2=8/2= 4cm

slant height=l

      l^2=h^2 +r^2

      l^2= 3^2 + 4^2

      l^2= 9+16

      l^2=25

      l^2=5^2

      l=5cm

CSA of cone=πrl

                    =22/7*4*5

                    =440/7

                    =62.85 cm^2