Question

A log of wood of dimension2m* 20M *10 m is cut into small box of 10cm*5 cm* 4 cm how many blocks do we get what will be the total surface area of the all these boxes​

Answer 1

Step-by-step explanation:

volume of log of wood = length×breadth×height

= 200×20×10 cm³

= 40000 cm³

volume of small block = 10×5×4 cm³

= 200 cm³

no. of block we get = 40000÷200

= 200 blocks

surface area of one block = 2lb×2bh×2lh

= (2×10×5)+ (2×5×4)+(2×10×4)

= 100+40+80 cm²

=220 cm²

surface area of 200 blocks = 220×200

= 44000 cm²