Question

the volume of a right circular cone is 100 cm cube and its height is 12 cm find its slant height and CSA

Answer 1

Answer:

hope this will be useful

Step-by-step explanation:

Given that,

V=100πcm³

h=12cm

Let the height of the cone be x cm.

Therefore,1/3πr²×12 = 100π

=>1/3r²×12 = 100

=>r²×4 = 100

=>r² =25

=>r = 5cm

so the slant height of the cone is root (12²+5²) = root (144+25) = root 169 = 13 cm.

Now it's curve surface area = π×5×13 =65πcm².

Hope it helped.

Have a nice day.