Question

the height if a cone is 16 cm and it's base (radius) is 12 cm. Find the curved surface area of the cone (π = 3.14)​

Answer 1

Step-by-step explanation:

Given,

r=12

height= 16

By using formula of csa of cone

Pie r(l+r)

= 22/7(12)[16+12]

= 22/7(12)(28)

= 22/7(336)

= 7392/7

=1096cm²

Therefore, the csa of cone is 1096cm²

Answer 2

h=16cm

r=12cm

π=3.14

l^2=r^2+h^2

l^2=12^2+16^2

l^2=144+256

l^2=400

l=√400

l=20cm

CSA of cone= πrl

=3.14×12×20

=753.6 cm^2.