Given dimensions of the block of wood = 20 cm × 10 cm× 10 cm

Volume of the block of wood = 20×10×10 = 2000 cm³ [Volume = lbh]

Diameter of the cone, d = 10 cm

Radius of the cone , r = d/2 = 10/2 = 5 cm

Height of the cone, h = 20 cm

Volume of the cone = (1/3)r²h

= (1/3)×(22/7)×5²×20

= (22×25×20)/(3×7)

= 11000/21 cm³

Volume of the remaining wood = Volume of block of wood – Volume of cone

= 2000-11000/21

= (21×2000-11000)/21

= (42000-11000)/21

= 31000/21

= 1476.19 cm³

Hence the volume of the remaining wood is 1476.19 cm³.