Question

Saathi
Date
what is the total surface area of a Cone
having radius r/2, and height 21?​

Answer 1

Answer:

Radius = r/2

Height = 21

Total surface area of cone = (3.14×r^2×21) / (4×3)

=791.28×r^2/12 = 65.94 r^2

$(\pi {r}^{2} h) \div 3$

It's the formula.

Answer 2

Answer:

Hope it helps you......