Question

If diameter of the base of a cone is 12 cm and its height is 8 cm, then find
the total surface area and volume of the cone.​

Answer 1

Step-by-step explanation:

Diameter = 12cm

Radius = 12/2

= 6cm

Height = 8cm

T.S.A. of cone = 22/7×r×l(l+r)

l=

$\sqrt{6 \times 6 + 8 \times 8}$

$\sqrt{36 + 64}$

$\sqrt{100}$

=10

l=10

22/7×6(6+8)

22/7×6×14

22×6×2

22×12

264