Question

find the total surface area of a cone if it's late height is 21 metre and diameter of its base is 24 metre​

Answer 1

Answer:

answer is 1361.48 m square

Step-by-step explanation:

area of cone is = πr(r+l)

πr(r+√r^2+h^2)

=22/7x12(12√144+441)

22/7x12(12+24.1)

=22/7x12x36.1

=1361.48 m square