Question

The outer dimensions of a closed wooden box are 10 cm by 8 cm by 7 cm. Thickness of the wood is 1 cm. Find the total cost of wood required to make box if 1 cm³ of wood cost ₹2.00

Answer 1

Step-by-step explanation:

• volume of wood required =volume of external cuboid - volume of internal cuboid
• volume of wood required = (lbh) external -( lbh) internal
• for external cuboid
• length(l) = 10cm
• breadth (b)= 8cm
• height (h)= 7cm
• thickness (t)= 1cm
• for internal cuboid
• length = l-2t = 10 - 2= 8cm
• breadth = b -2t = 8- 2= 6cm
• height = h -2t = 7-2=5cm
• volume required = (10×8×7) - (8×6×5)
• volume required = 560 - 240=320 cubic centimeter
• cost = 320 ×2
• cost =rs. 640