The volume of the largest right circular cone that can be cut out of a cube of edge 7 cm is:	Options
A) 89.8 cm ³ B) 92.5 cm ³ C) 132.8 cm ³ D) 144.5 cm ³ E) none

Rationale: sol . volume of the block = ( 10 * 5 * 2 ) cm ³ . volume of the cone carved out = [ 1 / 3 * 22 / 7 * 3 * 3 * 7 ] cm ³ = 66 cm ³ ∴ wood wasted = ( 100 - 66 ) % = 34 % . answer a
Answer: A