Question

the radius and height of a cone are 6 centimetre and 8 centimetre respectively find the curved surface area of the cone

Answer 1

r=6cm
h=8cm
c.s.a of cone=
$\pi \times r \times l$

$l { }^{2} = r { }^{2} + h { }^{2}$
l×l=36+64
l×l=100
l=10cm

c.s.a=22/7×6×10
=22/7×60
=188.57 cm sq

Answer 2

Heya

Here goes your answer

Radius of the cone = 6cm

Height of the cone = 8cm

Slant height = √(6²+8²)

= √(36+64)

=√100

=10cm

Curved surface area = πrl = 22/7 * 6 * 10

=1320/7

=188.57cm²