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 the wood required to make the box if 1cm³. of the wood cost ₹2​

Answer 1

Answer: Rs.640

Step-by-step explanation:

Given outer length = 10 cm

Outer breadth = 8 cm

Outer height = 7 cm

Outer volume = length × breadth × height

= 10 × 8 × 7 = 560 cm3

Thickness of wooden box, w = 1 cm

Inner length = l – 2w = 10 – 2 = 8 cm

Inner breadth = b – 2w = 8 – 2 = 6 cm

Inner height = h – 2w = 7 – 2 = 5 cm

Outer volume = 8 × 6 × 5 = 240 cm3

Volume of wood used = outer volume – inner volume

= 560 – 240 = 320 cm3

Given cost of 1 cm3 of wood = Rs 2

Hence the total cost of wood required = Rs 2 × 32

= Rs 640

Answer 2

Answer:

640 ..................ruppes