Question

a cone of maximum size is carved out of a cube of Edge 21 cm find the volume of the cone

Answer 1

from given

the cone should have height =edge

so h=21cm

and diameter =21cm

so radius=21/2 cm

now volume =  1/3pi r^2 h for cone

so volume = 1/3.22/7.21/2.21/2.21

2425.5

Answer 2

Heya,  This is an example by using edge of the cube as 14cm.You can just replace it with 21cm and that's how you'll get the answer  Hope this helps