Question

base radius =3.5cm ,height=12m find the volume of cone.

Answer 1

as volume of the cone is given by 1/3*π*r²*h
=> 1/3*π*3.5*3.5*1200
=> 15393 cm³ is the volume of the given cone.

Answer 2

Hello Mate!

Volume of cone = ⅓ πr²h

Here, π = 22/7

r = 3.5 cm

h = 12 m or 1200 cm

Volume of cone = ⅓ × 22/7 × 3.5² × 1200 cm³

= 22 × 0.5 × 3.5 × 400 cm³

= 15400 cm³

Or volume of cone is 0.0154 cm³

Note : The volume if cone is ⅓ the volume oc cylinder. So if you are successful in remembering volume of cylinder then one third of it will be equal to volume of cone.

Have great future ahead!