Question

Find the volume of the right corcular cone with (i)radius 8,slant height 7cm (ii)radius 3.5cm,height 12cm

Answer 1

Answer:

(1) =

Step-by-step explanation:

(1) r=8cm    ; l= 7cm

h=√r²*l²

=√(8)²+(7)² =√64+49 =√115 =10.27

v=$pi$r²h/3

=3.14*(8)²*10.27/3 =3.14*64*10.27/3

=687.95 cubic cm

(2)  r= 3.5cm   ;  h= 12cm

v=3.14*(3.5)²*12/3

=3.14*12.25*4

=153.86 cubic cm