Question

Find the volume of the largest right circular cone that can be cut out of a cube whose edge is 21cm

Answer 1

largest cone that can be cut out will have the diameter and height equal to the edge of the square

so, volume of cone=1/3×pie×r^2×h
=1/3×22/7×21/2×21/2×21=2961÷2=148.5cm^3